Search inhousepharmacy. Here’s a list of places I found but haven’t vetted. Worst case here’s a diy approach I’ve never tried.

Legal disclaimer: diy hrt is always less safe than monitored and the legality varies. Back in my day back in my country you wouldn’t get in trouble. Develop your risk profile before checking to see if your course of actions fits within it. I’d hate to get someone v coded. Also I’ve never done diy, I got the letter of recommendation from a therapist a decade ago.