Behind on your reviews? How to catch up without starting over

Published 6 October 2026 · Updated 6 October 2026 · by the Paced team

In short. A late review is not a wasted one: in a large study of review timing, scores fell only gradually when the gap ran past its best length. So don't reset. Pause new material briefly, put the overdue reviews back into the time you actually have over the next days, make each one a real recall, and fix the cause so the backlog doesn't come back.

Why a backlog builds up

A spaced repetition plan is not a to-do list: every topic you add schedules its own future reviews. On Paced's Standard pace, one new topic brings 8 reviews with it. Miss two or three days, or add more than your week can hold, and the reviews of earlier weeks land on top of the new ones. The size of the backlog is usually a planning problem, not a motivation problem (see how reviews pile up).

A late review still counts

In a study of more than 1,350 learners, Cepeda and colleagues (2008) gave a review after gaps of up to 3.5 months, and a final test up to a year later. As the gap grew past its best value, final scores went down only gradually. A meta-analysis of 317 experiments had already shown that the best gap depends on how long you need to remember (Cepeda et al., 2006): timing is a matter of degree, not a deadline after which the review is useless. Doing an overdue review late is still better than deleting it.

Catch up in five steps

Stop the inflow for a few days. Hold new topics until the backlog is under control: each one you add now brings more reviews later.
Sort the overdue reviews. Topics for your nearest exam first, then the ones you found shaky last time, then the rest.
Spread them over the next days, inside your real time. Count the hours you actually have each day after classes, work and shifts, and place the backlog there, rather than in one marathon day that makes tomorrow late as well.
Make each catch-up review a recall. Questions, cards or a blank page: retrieving beats rereading on delayed tests (Roediger & Karpicke, 2006; Karpicke & Roediger, 2008), and a major review of study techniques rates practice testing and distributed practice as the two high-utility ones (Dunlosky et al., 2013).
Fix the cause. If the plan needed more hours than you have, lower the pace (fewer, wider-spaced reviews), shorten the reviews, or add topics more slowly. A schedule that only works on a perfect week will fall behind again.

What Paced does when you fall behind

The morning after a missed day, it asks once: move yesterday's reviews to today, spread them over your week (it relieves the days that go over your budget), or skip them. Each choice has an Undo.
Did a review but forgot to tick it? Record it on the day you actually did it. Every pass keeps its own date, and caught-up passes never change the pace Paced has learned from your timed sessions.
Overdue reviews are rescheduled around your available time, and your history is never lost: changing pace or taking a break resets nothing.

Paced plans every review inside the hours your classes, internships and shifts leave, and moves what does not fit instead of piling it up.

See how Paced works Open the web app

Questions

Should I reset my reviews and start over?

Usually not. What you studied is not gone because a review is late: in a large study of review timing (more than 1,350 learners), scores went down only gradually when the gap was longer than ideal. Rescheduling the overdue reviews keeps that work; resetting throws it away.

Should I do all my overdue reviews in one day?

Only if they fit. A marathon day tends to push the next days' reviews late as well. Spreading the backlog over the next few days, inside the time you really have, gets you back on schedule without creating a new backlog.

Should I stop adding new material while I catch up?

Pausing new topics for a few days is the quickest way to shrink a backlog, because every new topic schedules future reviews of its own (8 on Paced's Standard pace). Keep the pause short if an exam is coming.

What does Paced do when I miss a day?

The next morning it asks once what to do with yesterday's reviews: move them to today, spread them over the week, or skip them, with an Undo. Nothing is deleted on its own, and your history is never lost.

Sources

Cepeda, N. J., Vul, E., Rohrer, D., Wixted, J. T., & Pashler, H. (2008). Spacing effects in learning: A temporal ridgeline of optimal retention. Psychological Science, 19(11), 1095–1102. More than 1,350 learners, review gaps up to 3.5 months, final tests up to a year later.
Cepeda, N. J., Pashler, H., Vul, E., Wixted, J. T., & Rohrer, D. (2006). Distributed practice in verbal recall tasks: A review and quantitative synthesis. Psychological Bulletin, 132(3), 354–380. Meta-analysis of 839 assessments in 317 experiments: the gap that maximises retention grows with how long you need to remember.
Karpicke, J. D., & Roediger, H. L. (2008). The critical importance of retrieval for learning. Science, 319(5865), 966–968. Repeated testing had a large effect on delayed recall; repeated studying after learning had none.
Roediger, H. L., & Karpicke, J. D. (2006). Test-enhanced learning: Taking memory tests improves long-term retention. Psychological Science, 17(3), 249–255. On tests two days and one week later, practising recall beat restudying the same text.
Dunlosky, J., Rawson, K. A., Marsh, E. J., Nathan, M. J., & Willingham, D. T. (2013). Improving students' learning with effective learning techniques: Promising directions from cognitive and educational psychology. Psychological Science in the Public Interest, 14(1), 4–58. Review of 10 techniques: practice testing and distributed practice rated high utility; rereading and highlighting low.