Changing from letrozole to clomid for iui #5

Macie • 26, same sex married couple, PCOS for 14years, ttc, iui #9 in progress with clomid+trigger+iui+donor sperm. Miscarried iui #6, lost twins on iui#7 at 3 months from fetal anomaly (conjoined)

We have done 4 rounds with letrozole and trigger shot and <a href="">IUI</a> with donor sperm. Never have had more than one large mature follicle. Our doctors want us to move to clomid this time in hopes to stimulate more follicles. Does anyone have any advice?? Has anyone switched medications and it actually worked???

Remaining hopeful.