8 months pp

Following

I got pregnant 5months pp and then after that birth got pregnant again at 8months pp. 3 babies. 2019, 2020 and 2022.

Seriously, WAIT. Your body NEEDS to recover. Don't expect subsequent pregnancies to be like your first.

With my first son, I worked right up until 2 weeks before birth. My second, had to call it quits 2nd trimester, and for my 3rd I could barely function and I was ragingly hormonal and sick all of the time.
My 3rd is almost 2 and I'm FINALLY starting to feel human again.

Honestly, just wait it out. Focus on your 8month old and perhaps wait until they are more independent/mobile?