How to Solve Issues With baby pillow

http://louisbbvp150.angelfire.com/index.blog/1679839/how-to-prevent-flat-head-on-baby-using-donut-pillow/

It works at first for my 4 months, but then he can switch his head easily following a couple of times applying it, I do not Assume it really works. Also my newborn's ears keep folding up when he is making use of