I mean, I’m not the person you asked for tips, but I wanted to drop my two cents.

If he has many health issues, asking him to switch software at his age will be challenging, and requires a lot of patience. You could start wanting to show him with excitement, like, showing how cool it can be to try out something new. He might get easily overwhelmed if things work differently than what he’s used to, so try to guide him in that.

but yeah, be very patient with him. I’m sure he’s got a lot on his plate already.

Just keep making sure he’s getting the medical treatment he needs.

I wish your family the best!