[Maximo]

Be patient, do not force anything, and give him reason to want to come to you.

Make sure when you ask him to come to you that it isn't just for undesirable things. Practice asking him to come, give him a food reward and then let him go on his way.

Make sure he never feels like a prisoner if you are holding him for snuggling/affection. That should always be on his own terms and he should always feel free to go his way at any time.

Things can change with age too. My Teddy didn't like to be touched when he was sleeping. Now I can give him belly rubs, reposition him, and do whatever and he loves it.

It might be that your pup will never like being petted on the head. My boys don't like traditional petting like stroking the hand down the back. Try scratching behind the ears or gently massaging the shoulders, chest area. Find out what he likes.