Should I call CPS against my ex boyfriend due to getting our toddler sunburned?

My ex and I have a court order for visitations and he takes our 15 month old son every other weekend. This past weekend he took him to the beach and my baby is very sunburned from his face. His cheeks and nose were bright red and his eyes were also it seemed like he was out in the sun for alot of hours. It's frustrating because my ex is very irresponsible and he always thinks he can do whatever he wants with our son regardless of how it affects him (have him sleep til 2 am, him and his whole family havong horrible eating habits filled with fast food, soda, candy, chips ect.)

My main concern is can this be a form of child negligence? Should I report him to CPS so I can have some proof of written documentation for court to show the judge how selfishly irresponsible he is?

I would never push his father out of his life but I really want him to man up, be mature and considerate of our son and possibly take a parenting course. I've been dealing with this nonsense since our son was a month old and it just worries me because the only one affected in the end is our baby.