Flat head

mi

My baby developed a flat head and I can’t help but feel guilty. I can’t stop blaming myself for it although I took him to the doctors when I noticed it at 2 months and all she said was do more tummy time and it will correct it self, she dint warn me that It could get worse and how to reposition him. He is now 6 months old it kinda looks bad. Anyone went through such thing and how did it go for you?.