Regarding his trailing behind you , encroaching on your space - ask your therapist about hints for behavior modification you might employ at home to curb these issues;

- you said he doesn't sleep? - could you convince him to take Melatonin drops?
- give them or capsules along with vitamins in the evening.

Just thinking aloud, ideas is all.

Meditation time with him encroaching on your space would sound difficult, unless you convince him you need the free space for it.

However, I agree, even your writing sounds as if you are making good progress. Refreshing your spirit, livening up your future.

Good thoughts to you, Best Wishes...........