Rooster Crowing Afraid Neighbors Might Complain! Need suggestions!

Okay so I have a silkie rooster and he keeps crowing at about 6:30 in the morning. I am not really supposed to have chickens but I do anyway . I am afraid that one of my neighbors might complain about him and I will have to re-home all of my chickens. I have had him for about a year but he had never woken up this early before. I am trying to re-home him but no luck so far. I thought about bringing him the house at night just until I can re-home him. Anybody else have this problem or have any suggestions?