Breastfeeding during FET cycle?

I had my baby last year in August and my husband and I are hoping to do a frozen transfer in December. My clinic doesn't allow us to do a transfer while breastfeeding and it's necessary to stop breastfeeding at least two months before they start the protocol. I'm struggling with this because I want to have another baby so that my baby has a close sibling so I don't want to wait too long, especially since if it's not successful we have to wait a couple months to try again. I also don't want rush weaning before we are ready. I'm heartbroken because they wouldn't even discuss it. We needed

<a href="https://glowing.com/glow-fertility-program">IVF</a>

because of my husband having antisperm antibodies but otherwise both of us have no other fertility issues. Any advice? Or experience with this?