Well, I sure am glad your son suggested the higher nicotine!
If there's ever any problems, you can always ask. Just like with the wrong nicotine level, all kinds of issues could pop up that might make it seem like it's not working. But, there's always a solution.
So, anytime you have a question or something's not working right, or anytime you just need to rant, give us a post! You are not alone!