This.
I work a 9 - 5 and my job usually involves tight deadlines, so I can’t just take a “study break” like some users do. The Ultimate Timeline script is a lifesaver. It allows me to time my lessons so that I end up with a manageable amount of reviews (less than 150 a day) even if can only do them mornings and afternoons.
I know there’s also an anti-burnout script somewhere that limits the amount of lessons you can do based on how many items you have on apprentice, effectively limiting the reviews you do per day, but I haven’t used it myself.