Today i spoke to a local vet (and a PB Lover) who's a regular customer at my shop & he said it's fine.
I'm frankly
shocked that a vet would say this is okay!

My vet was doing everything in his power to keep Drusilla alive, not only for me because he knew I loved her, but from the start he wanted her to be able to interact with her puppies. It was
only when her interaction with them could harm them that he said she wasn't allowed to be with them.
I was lucky enough to have another female in the house who took over the mothering role (everything but nursing) and lucky enough to have fosters who also had a female that was able to play "mom."
And
because I know what can potentially go wrong with a single handraised pup, one condition I had for
anyone who fostered my pups is that they take more than 1 or 2 (they had offered to take 4, which was half the litter), and an adult dog to play "mom"...and I was apprehensive even with that.
I'll move away from that, though...I wholeheartedly agree with what Liz and Malli are saying. You own a pit bull. And even though those of us on this board love the breed, and know otherwise, the general public has a perception that these dogs are maneaters and vicious. You say you've had experience with this before, and you have mentors who also have this experience (although, for the life of me, I can't figure out why, with all that experience, you had to come here to learn what to do about a flea infestation...is it that uncommon), but
WHAT IF this one time it's different?
WHAT IF this is the puppy that does develop behavioral problems because he was separated from his litter too early?
WHAT IF your dog does develop the other issues I already mentioned (which are VERY common in a single handraised pup)? Are you really willing to take that chance? Are you really willing to add to people's prejudice against the breed?