How do you work out with your babies?

My son is 6 months old and I'm a SAHM

I have a treadmill and we have some weights.

So I have everything I need. But I'm lacking motivation when I get up the first thing g I do is go get my baby out of bed then pick up the house sit on the couch until it's time to cook dinner.

The heat index has been 100 the last couple days so I don't want to take him outside for long periods of time.

Idk what to do.

I'm 5'8

199

I know I need to lose weight. I had an eating disorder before I got pregnant with my son.