Hi TFB, good to speak to you.
What sort of medical concerns do you have? If you prefer not to disclose this that is perfectly okay, or if you only want to give brief overlay of the situation, but nothing in great detail that's okay too, as I appreciate I am probing about deeply personal things and I thank you for anything you wish to disclose

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As for the training you could do a schedule something like this.
Squats, 2 sets, 10 reps
Lunges, 2 sets, 10 reps
Good mornings, 2 sets, 10 reps
Vertical flyes, 2 sets, 10 reps
Bent over Rows, 2 sets, 10 reps
Shrugs, 2 sets, 10 reps
Planks 30 seconds.
You would do that 3x a week every other day and only requires body weight
This could be adjusted to account for any restrictions in movement or range or motion if needs be.