as others have said, scabies are shocking shocking bad ... but as decision has been made, managing it with tips like those below are your best way forwards ...

we had a foster girl who had them, and we managed to not have anyone else in the household (including pets) catch them. but there was lots of management, vacuuming, hot water washes, and ointment involved.

but it can be done.

audax's tips are good, and I'd wash bubs as soon as you get home, and the clothes (and whatever you drapt the babyseat in) in a hot wash with a bit of detol or something when you get home.

good luck

it's a delicate situation ...