3 year old pooping in potty

Ri

My 3 year old is about 80% of the time pooping in his underwear. He is also not listening to his own cues to needing to pee. So he is having more times of peeing his pants then not and pooping. I'm exhausted. This is going on two months. He just turned 3. I have followed the oh crap method for the most part. He is in diapers for nap and bedtime. Any advice?