at 5 weeks, that is exactly what all kids do. eat. sleep. poop. cry. period.
yes, tell your mom to back off, if your baby stops crying when you put a bottle in his mouth.. that little mouth is all he has for communication. if he wasn't hungry for that bottle, he would wiggle to get away, and cry louder.
you know, when i first had a baby, i got all kinds of family members telling me what was best for the child....aaaaahhhhhhh!!!!!! everybody had something different, and everyone would be offended if i didn't follow their advice. i began to say frequently: "the doctor advises this. the doctor advises that. period. they grew to hate that phrase, but they also backed down. the hard part is, about babies, doctors are inconsistant. the time to feed a baby, pacifier or fingers, how to lay them etc change every 4 years or so.. and they change to this circular pattern! you always come back to "this way"... aaaaahhhhhh !!!!
we all live. we all learn...
just pray that you get stronger and not let your family sap your strength. sleep every single time your baby goes to sleep. the more tired you are, the easier it is for well meaning family members to offend you. keep taking your vitamins, like someone said. if you are not getting enough sleep, you are not healing. so you need to talk to husband to see how he can help you change that. you focus on the baby. everyone and everything else steps back or out of the picture for awhile...