Ideal time?

I'm currently working about 60 hr weeks and am finally sitting in a chair due to doctors orders.I had both my boys at the end of 36 weeks but didn't work with them, they are 5 years apart. My question is lol. When should I stop working? Like 34 weeks? Not trying to go into labor in a factory 😂. I'm currently 25 weeks also just a planner lol.