Medication + Fitness questions, interested in Platoon Leaders Class

I'm a college student looking into the marines (PLC) and navy (NUPOC).

First, do you have to be off all your meds for 2 years before PLC, even though you won't commission until after you graduate college? Or is it 2 years off meds BY the time you graduate?

Second, I can only do 10 pushups at a time, 1 chin-up, no pullups. My planks are maximum 1 min 10 seconds. Any recommendations? I've been working out 3x a week for the past couple of weeks.