Can’t get period naturally

Hey everyone.. I have PCOS and it’s on the bad side of the scale. Ive gotten my cysts to go away (yay!) and have lost a decent amount of weight.

Getting back into the swings of things to lose more. My problem I’m having while I’m TTC I can’t get a period to occur naturally. Only way is by progesterone or birth control. What can I do to assist this to happen?