I don’t know where to begin

My husband and I have been fighting a lot lately. Not like screaming matches, just bickering and annoyance with one another. I don’t know when it started I just know I’ve been feeling like this for awhile. We have an 18 month old and we mainly just bicker about whose doing the housework, taking care of the baby, just daily responsibilities. I work from home and my lo has been sick so I’ve been taking care of her plus working at the same time so that doesn’t help with my anxiety or his. She’s also been teething and waking up at night so that doesn’t help either. I don’t know what to do, we have talked about it and both said we need to split the activities equally, but when it come times to he complains! For example today he got home at 2 pm, I was working and our lo woke up at 3. She didn’t get her lunch because she wasn’t hungry before her nap so I asked my husband to feed her lunch. He got all pissy and just had an attitude with me...like why? I’m working I can’t do it. I’ve already been taking care of her all morning...just help! I don’t know what I’m trying to get out of this post I’m just lost as to what to do...