As above, yes, a unit can help you through the waiver process but it doesn’t mean it’ll get approved. It will still go through the respective state flight surgeon. If I could give any recommendations from experience in the guard, I would talk to that respective units flight doc about the issue and see their thoughts on the possibility and the capability of the unit backing you up. Also if you have the capability as well see a non-military specialist in relation to the medical issue and get their opinion and possibly a letter. I’m not saying that any of this is the silver bullet but getting all the ammunition you are able to can possibly help. I definitely would be upfront about it with the units UPT boards POC before going so they know the details. Them getting caught if guard and then trying to help is less likely than if you come with a ton of info and are upfront and they hire you.
Again all the above is my personal opinion from what I know and have experienced through my unit. Good luck and hopefully the waiver is in your favor, cheers!
STK!
-CAGE