Hi girl gamer.
I have fibromyalgia with Ehlers danlos syndrome and POTS. So for me all the crazy exercise is out. I've always lost my weight in the past by just gentle walking no more than 30 minute walks and not even every day because I can't. I have to cut my calories down to about 1200 to 1500 per day in order to lose weight and it works for me. Drinking about 3 litres of water per day helps.
I understand that your diagnosis has knocked you for six. Message me anytime if it gets you down. I understand.
Fraz