If you used Gonal-F (or other FSH) for an antagonist protocol for IVF (or even at all for IUI), what was your starting dosage and did it change throughout the stim days? And E2 levels if you recall?

My RE just got back to me and said that they were concerned that my E2 had gone up much too fast and wanted to my next cycle to be Lupron protocol to try to get a more steady response. On my 5th day of stims (so only 4 shots @ 225iu by the morning of my monitoring appt) my E2 was 572, and said it was too high and lowered my dosage. I'm trying to determine why a different protocol all together would be best, rather than starting at a lower dosage. Would a lower starting dosage mean less follicles would grow to maturity?