ETA: good advice above
Welcome to YT.
Your pup is very young and very tiny. Every dog is different, but you could have some time ahead of you before he sleeps through the night and is perfectly potty trained. He probably won't sleep more than 5 - 6 hours at night, and he will need frequent potty breaks during the day. Make sure he has one right before bed, and first thing in the morning.
Try feeding dinner around 5 p.m. (no food/treats later) and walking your pup and having a play session in the evening. The exercise will help take care of potty needs and help tire out your pup before bed. Always praise your dog immediately when he potties in the right place.
You don't have to have the pup sleep in your bedroom (although it would solve your problems quickly
). I saw an episode of "It's Me or the Dog" in which the trainer Victoria recommended doing exactly as you are doing not responding to the dog crying.
Just my personal opinion -- with a pup that young and small, I would consider using an xpen with disposable pee pads. You can put a rubber mat or remnant of linoleum under the pen and pads. A dog that is pee-pad trained can ultimately be a strictly outdoor potty trained dog.
Hope some of this helps.