ttc while bf/pumping

Last year we finally did <a href="https://glowing.com/glow-fertility-program">IUI</a> after 3 long years of no success on our own. my husband has a very low sperm count but everything with me was normal. our <a href="https://glowing.com/glow-fertility-program">IUI</a> was a success and we are qanting to do it again soon bc we dont want to waste anymore years. my baby is 5mo old and I am exclusively pumping. my period returned at 3mo pp but nothing since. I know breastfeeding may be the reason why my cycle is off. before this pregnancy my cycle was regular. does anyone have experience with pumping and <a href="https://glowing.com/glow-fertility-program">IUI</a>? would I need to stop bf/pumping in order get my cycle back for <a href="https://glowing.com/glow-fertility-program">IUI</a>? or since its male factor infertility, could it still possibly be done either way?