Staying busy doesnt have any relation with NE, what i tested till now it 3 things: limit the water in the evening, try to utilise the penis how much i can because it will tired it, and the last thing i try now is chastity, i buy some type of chastity belt or boxers that don't let penis to be upright and contract, the standards one i think it too much to sleep with, you can try, i see it works for me by now.