The only way to memorize anything is repetition. (I generally repeat this until my students memorize it.)
So, as I said to my students today, get your reps in!
If you know it’s going to take a certain amount of repetitions to get to memorized, there can be no good argument against doing that repetition as soon as possible.
It is literally the same as strength training: if you want to build giant biceps, you’ve got to get your reps in. Same for mastering the music you’re studying.
Get your reps in! What are you waiting for?