Yeah, we actually learned. My advice is to just make sure things stick as hard as possible at the start. Spend more time on lessons and your 4h and 8hr reviews should always be done on time if not close to on time.
Imo, if you do them on time, you should not miss a 4hr or 8hr review. If you did, either you’re trying to learn too much at once or you didn’t spend long enough on the lesson. Even I missed them occasionally, but if it’s even somewhat common then you need to look into changing your study plan imo.
And as missmisc said, learning Japanese gets easier over time. You sorta just get the hang of it.

