we had the same problem, i like sez said rolled up a nappy and placed it so her head laid the other way, but as she got stronger this didnt work, we saw a paed chiro at 8 weekd to loosen up her neck it worked but continued to get her to face the other way, i ended up using a heat pack to ever so slightly roll her on her side so her head flopped that way we wanted, definatly get it sorted as it never really recovers, you can still see sophie has a slight flat spot on her RHS