Help!!

Nena
My baby is 6 days old.. He was a 35 weeker.. At the hospital he would latch to my nipple very well this is because my milk wasn't in yet so my boobs and nipples were pretty soft.. My milk came in yesterday and my boobs feel like rocks and they are huge my nipple is pretty flat since my boobs are so hard and big, he can't latch like before😥 im pumping right now every 3 hours and i only get like 1 1/12 oz which is enough for him but i feel like he needs to latch and i dont know how to do it! Im also planing on pumping during the day and doing formula at night , since last night we tried doing just breastmilk  and I couldn't  sleep at all! Help any tips will it get better? Will my boobs get softer for him so he can latch better?? Ehat can i do? How will i onow he gets enough milk from one boob if he isn't latching well..!?