S.S.
I know it seems hard, but you need to stay consistant. The time outs will work if you stick to them. As soon as he finds that he can't go and do what he wants it won't be a game any more. Another part of his acting up may be that Dad is away. At that age they don't do well with change but it will get better. Stick to it and don't try to do alot of explaining. They really don't understand and you may send mixed messages to him. I would just say NO that's 1, NO that's 2 and one NO that's 3 go to time out. If he gets up put him back! This may take several times for him to stay 1 mins. (which may seem like a life time...lol.) It will work. I used a time out rug after I stopped using the play pen. I've seen people even use the crib. It works as well to keep them confinded for time outs. Some people don't agree with it, but if it works I say use it.