Impatient bf

I don’t know what to do... my bf is so impatient with our daughter (2years), he gets mad easily with her if she does something he’ll yell at her, it’s getting to the point where it’s stressing me out. Like i lose my patient as well since we have another little one (3 months) but I have more patient than him... I don’t know I’ve talked to him about he need to relax , and talk to her but he loses his patient fast. I honestly don’t even know what to say or do, he stressed me out sometimes. Like sometime I feel like I’m better off watching both of them even if ones screaming at the top of their lungs .

Tonight my daughter woke up in the middle of the night, she was complaining she had to blow her nose ... I told her go wait in her room I’m going to get some medicine and stuff to clean you nose... (she’s getting sick & she didn’t want medicine so she was screaming) so her dad wakes up, goes in her room and try’s to clean her nose with a wipe I walk in and he says she has nothing and gets all mad (because she was screaming & prob cause she woke him up) he stormed out the room after he was done and yank a blanket he brought in the room from under me a bit...

Like i get it you’re tired and have to get up at 5:30-6 am to get up and get ready for work... but fuck really...

I was breast feeding baby when she came to me about her nose , put baby to bed then went to her. Shit I’ve put my 2 years old to sleep while holding baby and she was crying. I wake up with baby every night and with our oldest if she wakes up, so dad doesn’t have to and Can sleep , ugh like I’m so annoyed...

And btw he sleep in a different bed in another room because he is a light sleeper and the baby is in our room with me. And oour oldest is in her own room...

I don’t know I just wish he was patient, like im tired too Im with them 24/7 . And try my best to let him get a full 8 hr of sleep while I deal with them .