Help with Abandoned Kitten?

they sell pet bottles with very tiny nipples. you can get them at walmart or a feed store. don'tnt know what you are feeding it but there are concoctions from reliable sources on the internet for kitten formula. most are made from goat milk because cats are lactose intolerant and goats milk helps them get fatter and get the protein and nutrients that they need. be patient and keep trying the bottle, the nipple is softer, maybe you can put the bottle through a stuffed animal and lie the kitten there coaxing it to the nipple and it may think its his mom. other than that i would say go to a vet or call one and ask for suggestions. they need to eat alot when they are small and they need to stay warm. it is very important for their growth.