I`ve wrapped my baby for sleeping since he was born and he has slept really well but now he is six months and the weather is getting warmer he doesn`t like to be wrapped because he gets too hot and sweaty. I`ve tried having him unwrapped but with his arms out he is constantly waking himself up and the only way he can get back to sleep is by wrapping his arms by his body. What should i do to sort out this problem?