Yeah I'm pretty curious about that too, I've heard mixed reviews about whether it's good to prepare before 1L or not, ranging from go take a pre law course to nah, just relax over the summer. Hoping someone could give their input!
I do an LG per day as a warm-up before I tutor or do some 0L prep (I've got PT 18, game 3 up for today). I too think I will continue this practice into 1L. It's the perfect warm up.