Does you wolfdog ever become less skittish?

My puppy is about 11 months old. I got him when he was 3 months due to unforseen circumstances so I wasn't able to help socialize correctly when he was a puppy.

I have tried hard to build trust and we are close he will cuddle for a few seconds and is well trained, but sometimes even when I stand up or make any movements he will get up and run to his safe spot or just be really skittish. Has anyone had experience with this and does it get better with age?