I personally haven't. But I think finding that balance, between helping yourself but also letting go and trusting your T to help you, is a hard one for everyone. It doesn't sound like you've necessarily gotten obsessive/delusional, merely that you wanted to investigate your care for yourself. I guess I would just consider whether there is any downside? Are you doing this because you don't trust your T to help you? Are you afraid to just let go and let yourself feel whatever happens in therapy? Do you think by not letting go you are keeping yourself from having a trusting growth experience? I have no idea if any of this applies, it's just what popped into my mind.

You sound very motivated and committed to your personal growth/care, and I think that's great. I'm sure your T won't be offended by that.
But as you note, there are some things you can't really teach yourself (especially some of the relationship things that you have to experience with another person), so that's worth considering, too. Good luck!