How can i limit data usage on my childs lined?

Is there a way to limit data during sleeping hours on any of my lines? ATT has this feature and it sounds like other carriers do as well. Has T-Mobile made any progress in this area?? All the posts I am finding are over a year old!

You can turn their data on or off in your my.t-mobile.com.om account.  Outside of that, there isn't anything else you can do outside of tKing away their device temporarily, like before bed, to make sure they aren't staying up all night on their phone.

i am looking for it ,too