To answer the question about Coffee and GLP-1 has your caffeine tolerance changed? — in my experience this comes down to a few key factors.
I have been dealing with this for over a year now, and what I have found is that individual responses really do vary. That said, the general consensus on Coffee and GLP-1 has your seems solid.
What specifically worked for me: getting baseline labs before making any changes. I would suggest NurseAsh_DET try the same approach and reporting back.