BMI about 45 and TTC... advice and tips

Hey girls! I’m 23 and my husband and I are TTC. I’ve ALWAYS been a big girl, but I stand 5’10” at 370lbs. This is the biggest I’ve ever been. I know and understand that being this big and becoming pregnant is a risk. I am currently eating healthier and trying to be more active to lose weight. This is our first month trying. We are ready, I just wish my body was. Does anyone have any tips, tricks, advice, etc to offer me - being plus sized/fat and TTC? Thanks girls!