How does compounding work if you already see a weight management doctor that prescribes you Zepbound?

Like many of us here, I’m looking for answers because my insurance stopped covering Zep. I have a great and trustworthy weight management doctor that I see who prescribes me Zepbound. I’ve noticed that it seems like a lot of these sites require you to see a medical professional from their team. I’m not looking to transfer service, just looking to compound as a cheaper option. Is this something my doctor can send a script for? Or do I have to transfer my prescription care?