I’m in the same boat, I’m 3 weeks p.o. and I have a 10 month old, my husband has just gone back to work so I’m having to do more now but I have felt fine lifting him I’m just limiting how much I lift him, and trying to do more on the floor with him, I didn’t have any pain past day 2 but spent 2 weeks doing nothing to give myself time to heal as much as possible, make sure things like the buggy is already set up to save you trying to lift this.
I have been putting him on my lap before standing which takes some of the weight and try to keep elbows as close to body as you can and use lower arms. Just try to make sure little one doesn’t bang into the new boobies 🙂