My 3 year old daughter is addicted to watching cartoons/ toddler programs on YouTube. She's gained the intelligence to even unlock my phone and remembers my passcode very well. How do I get her to lose interest? I usually give in to her during meal times as I want her to finish the food.
The ideas above sound good...
One thing that worked for our daughter was to clearly say the ipad is for the weekend only. Somehow that made it more bearable for her