I was left for a few hours on my own with both children when DS was about 10 days old. And I realised then that I could lift DD (didn't have much choice cause she got herself stuck in a box).

I also felt comfy giving her cuddles on my lap from about day 3. I even gently lifted her from that time to my lap while holding my scar with a pillow.

But as others have said, let your body be the guide. I didn't lift her into the bath until about 5 weeks. But I would kneal in the shower with her when DH was on evening/night shift from week 3.

Good luck.. Hope tomorrow goes well for you and you have a quick recovery.