Hi Marianna .....
It is three weeks post-op today for me, but I had translab this time. It is still very numb and aches, but no pain really ..... so I'm not much help. I do remember after the retrosigmoid three years ago, the incision area was very sore and tender for a long time. Not sure what, if any, difference there should be. I would think a craniotomy is a craniotomy from either approach.
Since this is new in the last week for you, can you call or email Dr. Akagami? Just to check and make sure he considers this a normal part of the recovery. Never hurts to ask.
Quite a while ago, Brenda suggested getting a snoogle (long snake-like pillow) for back problems so I got one that I used for a long time. Not sure it would be very helpful in this situation. I'm still basically only sleeping on my non-AN side with a regular pillow ..... just more comfortable.
Hopefully someone will have some other suggestions.