Weight gain during IVF and Hashimotos Hypothyroidism

Hi Ladies! Looking for some help with weight gain during IVF. I have Hashimotos hypothyroidism and my RE is checking my levels every 6 weeks because my TSH levels keep swinging between 1.2ish to 13ish within 2 month increments. Adding fertility meds to it hasn’t helped and I have gained 10-15lbs and I’m trying to get the weight off. I cut out gluten for the Hashimotos and I eat a pretty healthy diet. I religiously track my steps/exercise and get at least 12-20k steps a day and exercise at least 30 min a day.

I had my retrieval on 4/3 and I’m scheduled for my FET in early May and would love to not feel like a blob.

Just looking for some tips that could help or if the weight gain is just normal while going through IVF meds.

Thanks for your help!!