I think a confinement nanny is a must in your case. Baby drinks every 2h if you breastfeed (3h at most if you bottle feed). Not forgetting in the first months, baby poops after every meal, so that's like a cycle - feed, change diaper, put baby to sleep, and repeat. No time for you to get proper rest that you need postpartum (please prioritize your recovery so that you can look after everything in future).
If you don't have enough rests/sleep, you cannot do any other things (like household chores) too......
I agree with another mommy, to try interview another helper.
Gena Wong