My son was the same way 6 months ago. He just decided that he didn't want to go to scouts any more. When I asked him why not he said it wasn't fun and he didn't like what they do. What they would do is sit in a room and talk camping trip, merit badge. It the boys in charge didn't have anything planned yhe would go outside and do PE.
This last Monday night he surprised me and asked to go to the meeting. Got there they did the same old thing, noting was planned so ourside they went. There is a camping trip this weekend.
Now my son have a very hard decision to make. Last night a man came by that I know and asked my son and myself if we would be interested in transfering to a new troop that they are starting up closer to home than the troop we are going to now. He has been asked to be the SPL as he would be the oldest one and with experience. This troop would be made up of kids coming from the pack that is already going.
So more decisions to be made at my house.
Hopefully your son will do like mine and shortly want to go back.