advice about PT

bttrflyprnc7

I started potty training the day after he turned 2. he had been casually sitting on potty threw out the summer and never really going Pee on it. so on Oct 12 we officially started PT. he was doing great by the first week of Nov he was telling us when he had to go. but now it's almost March and he regressed to saying sometimes he is a baby. two days ago he had 5 pees in pants in 2 hours. I use pull ups when we go out shopping, and underwear at home or grandma house. naps and night time is pull ups. the last few days naps are now underwear. staying dry. some nights he is dry in AM. should i stop using pull ups when we go out and just deal with pee and poop n pants? what do you guys do? my family memeber tell me he is very young and it's ok if we are still trying after 4 months.