Home alone 2

Jon had some idea but first he had to make sure that he won't be stuck with the effects of the unlycky wish,he said:
-I wish that any effects of the wishes made with this stone for the next 48 hours will and in exactly 48 hours from now on.I also wish that I would be able to stop effects of any wish by saying "stop" and thinking about that wish.
Now he had to think about what he wanted to wish for.
-I wish i was alone in house for the next 48 hours because the rest of my family went camping and nobody will come to my house.
Now he was sure that nobody will disturb him.Now he could make any wish...