I do not have PND experience at all but the way i see it is... You are there, the benefit of further help is being offered, take it

Maybe look at it as last week was the time to help your little girl, get her into a bit of pattern that allows her to get better sleep therefore thrive and grow and be a happy little bub and the week to follow is about you. YOU are just as important and a happy and healthy mum will result in a happy and healthy bub.

Best of luck in whatever you decide xo