There are a couple memorization topics that have been meaningful to me. I’ll link them below.
I take it you are going into BLIM Class 2? I was in Class 1. The time you will likely spend may not give you much time to work with your old songs. You will need to see how it goes. It is pretty exciting to get the new material each month and then see how far you get with it before new material drops. Part of this will be two new song lessons, part will be memorizing the licks.
You may be able to use the following technique. A large part of this technique is exercising your memory rather than resorting back to the tab. Use the tab as a last resort and don’t give in too easily.
Another topic is this disdussion from Lieven. It looks at learning a little differently.