OP... have you considered switching to wifi?
My son used to do that same as yours and the best way i found to stop that is to place duct tape over the buttons on the router. And the wire itself i now have nailed to the wall so tight you cant remove the plug.
If FD gets a report of you combat logging they will see everytime you DC from the game and if it shows a pattern as in EVERYTIME you get interdicted but never any time else then yse you will get a slap on the wrist. If they see you DC randomly flying, docking, launching, interdicted they will see its not with malicious intent so you should be safe.
Saying that tho. If you tend to DC often during an interdiction you may get an email letting you know. Maybe switch to solo for some time while your little one grows out of that trend.