It takes time. I can't remember how long it took for mine to get used to me, but it was a while. Just keep talking to him, and spend time with him. He will come around soon. Don't get discouraged.
Two weeks is not very long. They aren't like domesticated dogs or cats. They think you are their enemy standing over them waiting to eat them. He will come around. May take a month, may take a little longer maybe even a little shorter. Some will never get totally comfortable and always pull in. If they come right back up, they still feel safe.
I've had my sulcata sue for abut a month and a half, I work with him/ her everyday for at least 2 hrs and after about two weeks sue wasn't scared at all and now I can brush his arms legs and pet his head so maybe try working with him/her more and he/she will come around quick