I try to drain my reviews, but I am pacing out my lessons. The reason is that if you do a burst of lessons, it’s going to result in a burst of reviews later on, which means it becomes easier for reviews to back up later. I’ve set my pace at 8 lessons a day, and I only do those once I’ve drained the review queue. If I don’t have time to complete my reviews, then I don’t do any lessons for a day.
I switched to this approach because I was spending too much of my time in the app, instead of reading or doing other things. I also went on vacation mode for over a month, and it took me a while to come out of that backlog. My goal is to continue making steady progress, but not try to cram it all in as fast as possible. (Also, I invested in the lifetime membership so I wouldn’t feel the pressure to “get my money’s worth” and overdoing it.)