I believe it does but if you don't replace screentime with anything you enjoy then I think you make matters worse.
Maybe try replacing it with reading fascinating books. Try unplugging your computer and putting it away when you don't use it doesn't feel as much as an option. If you are able to, experiment with not having your mobile phone on you.
I recently did a similar experiment where I put my phone away and didn't touch it for 2 weeks and felt myself open up to the world a bit more.
If possible, find interesting environments to study in. Coffee shop can be a cozy place.