my son is around 4months.. his left side head is flat and longer.. he is comfortable only on left side.. giving him tummy time but not working please help

A. Babyhug hollow pillow you should use it would be a good option for you because if the child is sleeping on the left side constantly the head will become become Flat that’s very obvious you have to avoid the situation make your child sleep on the right side or back but using a pillow even on the left if you start using this pillow since the head is not going to touch the bed gradually probably things are going to get better