I am having the SAME problem. He cries ALL the time. My son is a tough guy and never cries unless he has really hurt himself. The little boy cries AT EVERYTHING. Even changing his diaper, and it's an annoying cry. I'm at the same point - giving him time out. And I'm at the point now too when I sort of ignore his cries, bc I don't know if he's genuinely crying or if it's bc he wants attention. What I've noticed is that his parents JUMP when he cries. "WHAT'S WRONG?!" Drives me nuts! I actually just posted something about not liking a kid....it's hard to BOND with a kid who is such a...baby lol I have no advice for you lol cause I'm probably not handling it as I should. I just keep trying to remind myself that it's not his fault - it's his parents, and that's his personality. But TRUST ME I know how annoying it is.
I was just thinking: what are his parents like? Are they quiet and calm? Are you bubbly and "aggresive" maybe you just freak him out lol how long have you had him for? That's the only thing I can think of that he would be like deer in headlights with you

Let me know what you decide to do, because I'm in the same boat sister.