Fellow mommies I need some advice. I been gaining weight more than usually. During my pregnancy I didn't really gain…

Fellow mommies I need some advice. I been gaining weight more than usually. During my pregnancy I didn't really gain much and what I did gain I lost when I gave birth to my son. It's been 3 months since I had my son and I'm putting weight on like crazy. If anyone has any advice for a diet or some exercises I could do at home while taking care of a 3 month old please let me know! Thanks in advance :)