IUI after IVF

I just had my first checkup scan/bloodwork for my IUI today. I already had 2 failed rounds of IVF. We decided to try IUI as both of my egg retrievals only yielded 1-2 eggs and zero embryos. I haven’t received my blood results or instructions for today, but I had several large follicles (I think the largest was 24mm which is larger than any in my IVF cycles) and the nurse expressed concern that it was too many! Has anyone ever had a “better” response to IUI meds than IVF meds?? I’ll update what they tell me later today. My body is weird.