The follicles will generally not grow w progynova but i was told some ladies still ovulate. anyhow, ovulation is not required for medicated FET.
Mining must hit 8mm min. Be it natural or medicated FET.
Natural, once positive on Ovulation kit and scan showed a dorminant follicle, ET must take place on d2 after getting a positive on the kit. Cannot delay. Coz once ovulation happens, the lining will shed if not pregnant.
Medicated FET has more grace, can delay 1~2 days after womb lining is ready as long as prognova continues.