I have hand reared 4 different piglets through to weaning as long as they have had some colostrum they seem to do well. The first one had been started off on sma baby milk by the breeder via syringe, which I wouldn't reccomend as you can so easily cause an aspiration pneumonia. The second one on goats milk, via a bottle. They seem to take to bottle feeding more easily the younger you get them started. These 2 were how i got started with pigs!
The second 2 were piglets of one of the above when she had her second litter, possibly due to being hand reared herself, she freaked out when farrowing and savaged her piglets. I managed to save the last 2 by knocking her out with a couple of cans of cider, letting them feed for a couple of hours while I sat with them guarding them from their mother, then took them in, under a heat lamp and fed on farrowmate and introducing creep feed from 3 weeks. The other hand reared sow has been a great mum.
Last month my Tamworth gilt had her first litter of 12, when they were about 12 hours old I noticed one was much paler than the others, quiet and not strong enough to feed. I took him in warmed him up with hot water bottle and cuddles from the kids, got him feeding from the bottle every couple of hours or so. After 3 nights indoors he was up and about much brighter and noisy so reintroduced him to mum and he's been out with them ever since. The only way I can tell him apart from the rest of the litter is he runs towards me when the others leg it away!
So it is possible, good luck