Conceiving while breastfeeding

Kristina • Mama to 2 beautiful baby boys 💚 Nov. 22nd 2016. Oct. 22nd 2019
My son is 9 1/2 months old, and still exclusively breastfed. He eats some solids sometimes through out the day and baby food but it has been a while since I have been giving him baby food every day or twice a day since we just moved out of state so it's been hard to keep with our schedule we had. I also havent gotten my period back yet. Mine and my SO's goal was to get pregnant before he turned 1 so they can be pretty close in age. Every time I feel like I could be pregnant I get a BFN test back. So my question is do any of you ladies have any tips on trying to conceive while breastfeeding? Anything I should try or anything I'm doing wrong? I don't want to wean him yet he isn't ready for that and my goal was 1 year. Have any of you gotten pregnant while breastfeeding before 1, what did you do?