That's a great question. I tease, but first step is realising the problem and you've done that. Much harder is acting on it.
The truth is nobody really knows. It's new. Addiction to it is also new as is the research showing its deleterious effects on the brain.
If I was looking for somewhere to start by trying to read a book a every week or two. Alternate between appealing fiction and an important topic. If you have readings set by your educational institution - do those instead. Reading and digesting plaintext information works a lot of your brain and doesn't come with any immediate answers to questions, it will help you build your patience back.