Weight loss when breastfeeding?

I'm ebf and am 6 and a half weeks post partum. I have PCOS and last year in Jan & Feb did keto/lazy keto and lost 22lbs and in March got pregnant and the cravings started back. My Dr said no keto/low carb while pregnant and I've read that keto or low carb diet aren't good while breastfeeding. But I'm 248lbs and ready to start losing weight again and tired of wearing maternity pants. What are you ladies doing to lose the pregnancy weight while breastfeeding?

Planning on starting something like piyo or t25 next week. Had a 2nd degree tear and even still have a few stitches so hadn't done more than walking around the house and stores.