First IUI

Hello everyone, I have PCOS and I've just started the medication process before my IUI procedure in a couple of weeks. Currently on Norethisterone for 10 days to bring on a period followed by Letrozole for 5 days and Ovaleap injections for 3 days. Booked in for a scan and bloods on the 20th then if all looks good and I have developed follicles I'll be cleared to take my trigger injection then my IUI procedure. Just wondering if any of you have been through this, what should I expect, anything I can do to increase my chances of it being successful? Just any advice really. Been ttc for 6 years so you can imagine how excited I am 😁 Thanks x