Please help what is this?

I made an appointment for my baby so don’t worry we will be seeing an actual doctor but I just wanted to hop on here to see what you guys might think it is and if your baby had the same thing. He is a year old already and he got this at around 10 months old. Some days it looks a lot better and some days it looks really bad like this. In the pictures the red spots look wet because I put some cream on it to help it sooth him because I notice he will start rubbing on it. He has been on formula at 3 months and never got this until 10 months. At a year old we switched him to cows milk and still no difference. He eats food now but he has been before 10 months and he never got this. Sometimes it will start bleeding and it will be super dry and very very red so I’ll put some cream on it just to help soothe it and moisturize it. Please no mean comments. I just want to know if any of you had seen this before and know what it might be thank you!!