So I just bought a second shield tv, this one I will have setup so my kids can is it too. I plan for them to use the restricted profile to block some apps. I am if there is a way that it would change to the restrictive profile by itself. For example if after watching tv at night on my profile, I forget to switch back to the restrictive can I use an app to do it for me. This way of they wake up earlier than me that won't have full access.
I have no clue. Lol. But, you might try playing around with Tasker. You'd have to side load it, but it can definitely do automation like no other.