Progesterone

Madelin

I’m currently having my second period with progesterone after not having one for over 100 days. Me and my fiancé and wanting to have a baby and my doctor knows this. I have insulin resistance. She wants me to take the progesterone for 6 months before putting me on letrozole. Is this normal? Is there a possibility I can ovulate and conceive with just the monthly progesterone and metformin?