Chic, Dandy is speaking some powerful truth here. Please go back to your therapist, lead by example and I agree DO NOT give him internet. He is baiting you before he even has the first paycheck in his hot little fingers.
You really are living for his comfort it sometimes seems. Your own life is very important, you have squashed down yourself so he can grow up and there all these damn weeds in the garden.
why don't you think to yourself "i will revisit the internet turn on issue after November first" in the interim, get yourself some happiness AWAY from him, go out, buy the tablet, get brakes for the truck, go buy some fancy coffee and jammies too. Go flirt at the mall. go and have fun...just for YOU....forget about his issues for a little while, they will still be there when you return home.
hugs.