Hi Dan and welcome to our group! I have a 5 1/2 month old son who had his surgery 8 weeks ago. My son is also having problems with head control. He was doing great until he got ill and had to be on a vent for 3 months. We could not hold him or move him and he lost all control. Now, I work with him on a daily basis. My son still can not be on his tummy yet, so I have been sitting him in a bumbo chair and have a little neck pillow (usually worn to sleep on plains when traveling) this seems to work great. When his muscles are tired, the pillow is there to catch his head. But keep an eye on him as they do wear out easy. Don’t give up, it’s a struggle but he will do it!