6 weeks pp what can i do to lose belly flab?

K • 22. mum to baby boy :)
Hiya, im 6 weeks pp tomorrow and want to start exercising to lose my belly flab. I have started eating healthy. Does anyone have any exercises i can do or some other tips to lose the belly flab? I understand you have to be careful when breastfeeding so you dont lose your supply. Thanks :)