Something to consider when we talk about disconnecting and “touching grass”… it’s not an immediate thing. You need to be vacation for several days before you can genuinely begin to relax and feel and positive effects. So this idea that we can just nip out for 20 minutes and leave our phone behind for serious benefit is pretty much worthless.
So if you’re “disconnecting” and you spend the first few days just sleeping or staring at the TV, that’s pretty understandable. You’re paying off a fair bit of “rest debt”.
WRT your update: That’s great that you’re getting professional help. Make sure (if you aren’t already) that the feels you’re sharing here are being thoroughly conveyed to your doctor. Medication can be fantastic, but you may benefit more from a different medication. All good things to bring up with your professional.