just my 2 cents though in the meantime
if you are just starting out your fingers will need some time to get stronger ( lisa's spider exercises are great for that ). They need to get used to the positions of the chords and working on stretching/muscle memory. In time you will build caluses on the tips of your fingers which is very important.
Consistent practice and time is your answer.....the pinky is in my opinion the least used (depending on your style of course...not so much if you are concentrating on jazz) and as the smallest finger it takes more to build up but youll get there.
I wish I had a martin to learn on...or play period..lolol...
make sure you check your strings too....they shouldnt be discolored or rusty. I know a guy who always plays on old strings and it drives me crazy.
Nowadays they make coated strings which can be a little easier on the fingers...but that is all opinion and tatse. I use the Elixer nanoweb coated ones.
Hang in there and keep playing...