Depression and anxiety

Hey guys.
Would love some info and support in this.
I’ve fallen into a pretty mad depressive state the past month, I have a history of it, but have been really good since December (adhd diagnosis, vyvanse has helped) also weened down over a year of fluoxetine.
The only thing that has changed in the past month is my retatrutide commencing.
I didn’t even think about this, and thought it would be the last thing that would cause it. But reading previous messages, it seems to be a common theme.
Could I please ask if anyone has any insights to this and how you went about it? I’ll be ceasing it this week to see if it makes a difference but also how long did it take to feel better since ceasing Reta?
Thanks so much.