Hello everyone. Girls, please help! The baby is 3 months old and doesn…

Hello everyone. Girls, please help! The baby is 3 months old and doesn't want to lie in the stroller anymore, I don't even want to go for a walk anymore, I try to go out after waking up, sometimes he doesn't sleep and I have to carry him on my hands, our stroller is quite normal (Easywalker Charley carriage), I dress it easily, it's not hot at all. Before 3 months, he was fine when we went out, he slept well.