What size syringe are you using?
At this age you don't want anything larger than
a 1 cc syringe. Are you using a nipple?
Also can you get the Powdered Puppy Esbilac
like the one in the photo above. Most pet stores or
tractor supply stores sell this.
The goat's milk doesn't have the proper nutrients
for a baby squirrel.
Also here is an excellent like on caring for baby
squirrels. It's 6 pages long (very quick read though)with the NEXT button on
the top right hand side.
https://www.henryspets.com/1-basic-setup/
Amazon has the correct formula, and if you have Prime, you'll
probably get it by Monday, if you can't find it near you.
https://www.amazon.com/PetAg-Esbilac...gateway&sr=8-3