My boy has woken up and breastfed for 45 mins nonstop (active latching and feeding). He then sleeps for 15-30 mins and then wakes up screaming and wants to eat again. He has now eaten 3 times in 4 hours. I feel like I have nothing left to give him. I feel completely empty and no more milk is coming out. He definitely got milk the first 2 times as I was very full and know he got plenty. What do I do when I know he wants more milk but I have nothing left? He has been crying nonstop until he gets milk. Of course it’s my husbands first day back at work so I took the night shift, haven’t slept, and I feel like I am going crazy. Please help.

*Edit- my baby is 3 weeks old.