Keto while breastfeeding?

I am so sick of looking the way I do! I’m 7 weeks PP and way too big! I’m 5 feet tall and weigh 170 😭 (I still can’t believe I put on 50 pounds between my two pregnancies (miscarriage in January 2018 and my beautiful 🌈 was born 7 weeks ago) in the past year!) I just cry every time I look in the mirror and see the weight and my stretch marks.

I’ve heard keto is a really good way to drop weight quickly and healthily, but is it okay while exclusively breastfeeding? Also, if anyone has any tips or meal plans, that would be awesome!