Jacksonville NAS?

Hi there. I'm getting ready to move to Jacksonville here in a couple of months and I have Tricare Prime. I know I'll most likely be seen on base and am looking to get started on this journey. I've struggled with my weight most of my life and after I got out of the Army, put on a good 50 lbs thanks to Lyrica. Even though I've been off of it for over 2 years, I struggle to lose the weight. I'm right at 35% with co-morbid conditons (arthritis, OSA, fibromyalgia). What is the process at NAS if anyone knows? If they except you to lose some weight before hand to show that you are serious, and that puts you under, does that mean you no longer qualify? Thanks in advance to anyone who can provide answers!