DH works long hours and is away more often than not. That means I'm on my own with three DC (one with SN and one only 19 months old), two dogs, numerous other animals, a job and a pregnancy that's leaving me extremely sick and tired pretty much all the time. He finishes work at 5 and then gets to eat out and socialise so I think he should be well rested when he comes home and step up.
However, I still feel like I can't take a step back even when he's here. If the DC are doing something they shouldn't or are upset he'll look at me and stand there silently. Today our five year old was really upset and he sat there in silence the entire time, then asked if I wanted a cup of tea 
I couldn't help myself and remarked "oh, so you do still have a voice then?"
We went swimming and I took 5 yo to the toilet, when we go back to the pool 19 month old is running around the edge and DH is following but not saying anything. Again, I have to step in to tell her to stop. She picked up someone else's goggles and I explain they're someone else's and to put them back and she does. DH hears this. 5 yo asks to show me something so DH takes 19 month old and when I turn back she had the goggles in her mouth. DH is just watching.
At the park afterwards I'm tying the dogs up and 19 month old goes running off towards the roundabout. It's spinning so I call out for DH to tell her to stop because she's too fat away to hear me. He doesn't, he starts chasing her instead but doesn't make it in time so she now has a huge bump where it knocked her onto the floor.
Yesterday he watched her get chewing gum out of his pocket and said nothing as she toddled off with it. It's always left to me to say something. AIBU to be irritated by this?