Will A Baby Field Mouse Survive Away From Its Mother?

Will to tell ya ,,,it can if you do what we have done. I found a really small one last week at the va
it was hot and the concret was cook en eggs..  Out in the middle was a parked harely motorcycle.
I just happed to walk over to look at the bike and saw a baby mouse in the shade of the bike..
Brought it home and we have been taken care of it for over a week now   hes wight was about 4.93 grams ,,, now he wights about 6.53 grams..
We use puppy mike and it seems to helping alot... The pmilk has lots of fat and vitamins that
really help keep him strong and growing   ps.. We named him harly...