Breastfeeding and transfer

Hi. I am getting ready to do a frozen (medicated) transfer In next month or so. I am currently only breastfeeding my 13 month old once a day at bedtime. My doctor said it was fine to continue this until I start my transfer meds. But I started thinking about it after and I question if basically weaning my transfer cycle could cause it not to work like messing with the hormones and what not and if I should just stop now. Any ideas?