Baby with "flat head"

[Bethanyds]

Hi James,
My 11 month old has a pretty flat spot on the right side of his head from favoring that side while sleeping. My dr. doesn't feel helmets work well. I also am not for helmets, as I don't really trust a whole lot of what the medical community offers. My dr. says his head should shape out by 2 years old, but I've read some stories online where some children's heads did not shape out. I've also seen that it can cause brain damage and developmental delays. Now I'm torn and I don't know what to do. What are your thoughts?