2 toddler boys, 1 year apart issues

My boys are 1 year apart, one is 2 and the other is 3. They are HELL ON WHEELS. 😂 I love them dearly, but they are a handful. They love to wrestle each other and they are very jealous of one another when it comes to me. They are into everything.

My 3 year old has became very demanding. I have been disciplining them in my own way.

One on one they are good as gold. But, put them together? Oh lord. Dont get me started! My daughter (who is 9 now) was completely different than my boys. My boys are so much messier and stubborn.

For example, my 3yo son REFUSES to use the potty. He has before, he knows what to do. He will do it when he wants to but he will fight to the death when I put him on there myself. He says he does NOT want to pee pee/poo poo in the potty. Like I said he knows what to do, he just wants to wear diapers still for some reason. I've asked him why and he doesnt really give me a good or straight answer.

Any ideas???

FYI: We are currently staying at my parents house out of state for a few months since my big bro just passed away unexpectedly so we can be here for my parents. Things are MUCH different here than it is at my home out of state.