Would love to know if there’s other preps?

I emailed my nurse letting her know today is day 1, she sent me my calendar for upcoming appointments, meds and when transfer will be. This will be my 3rd transfer but second FET. Is it pretty common that on day 20 of cycle to start lupron, wait for another period, drop lupron dosage and then start estrogen and add progesterone? This is the same schedule as my first FET that was unsuccessful and I want to make sure I’m given all options. I did put an email into my nurse asking if this was the only way to prep for FET. I’m just worried because the first one was unsuccessful and we’re following the same plan so of course I’m second guessing it.