New to MS

Hi all, I'm a 52 year old male just diagnosed with Primary Progressive MS. It's mostly affecting my left leg so far, with foot drop, altered gait and weakness. I can no longer stand up from a squat on that leg, which is scary for a guy who's been healthy, strong and physically active his whole life. I've been in the Canadian military for 16 years, and am currently in the Physician Assistant medical training program. So this may end both my military, and medical career. Not taking any DMTs, but am on a potassium channel blocker to improve function in my leg. I've had 2 failed LP attempts, waiting for number 3 once I get a lumbar spine CT. I had a bad sciatica flare up a month ago that made my MS symptoms a lot worse, and even though the sciatica calmed down, the MS symptoms worsened by it haven't. Waiting to be seen by PT for any input from them. That my MS experience so far, would appreciating connecting with anyone in the same boat - older male, PPMS, to get more insight, or hearing from anyone else with MS for mutual support. Thanks.