For most, a ketogenic diet consist of MCTs (medium chain triglycerides like coconut oil) for most of the fats. A modified version would be using more animal fats, too. If it works for you, you should stay with it.

Have you read the Vitamins sticky ?

Pork is a good source of Branched Chain Amino Acids. The brain needs them.

Are you getting quality sleep ?

btw, Age can make a difference in sensitivity to head movement. The older, the more sensitive.