I do understand some frustration. My dad died this past year and I was caregiver to him for about 7 months. I also had a brother who decided to try to take over caregiving which made it even harder, arguing over what medications I knew my dad needed. They need inhalers given at the right time to help them breathe. Not getting enough oxygen could be making your dad somewhat disillusioned (his brain isn't working at as full of capacity as it would if he didn't have copd). My dad had that, he survived cancer for 35 years after he had a lung removed. It is hard to caregive. Do you get some time or a day here and there for a break for yourself?

Because I recently went through this, I have compassion for your dad as well. Dying is hard, whoever says it's easy it isn't. I felt awful that at times I also got tired of the moaning, groaning, needing attention a lot, and I REGRET that. Time is the most precious thing. And yes, being more like an infant seems like that happens at the end of life. Yes he may get annoying, but please remember whatever you do or say is important to your Dad. He could be gone soon, it may be another year, you just never know. I'm glad my dad was mostly pleasant and not too demanding, but I also think he didn't want to be any burden on anyone. Your dad may be very conflicred and not just acting babyish and demanding. In any case, I wish the very best for you as this is a very hard job.