just stop reading yaoi and get a job or something lol easy peasy
You'll need to ween yourself or just go cold turkey from it. It may be difficult since for some people it's an undetected addiction and escape. But if you have the will power you can do it. Fill the void with other forms of entertainment like reading or other hobbies. Personally I'd recommend that you simply spend less time of your day on it. Force yourself to acknowledge how much time you're spending on the website and consciously control it. Limit yourself to an hour, then just thirty minutes a day until it becomes only ever so often. Then you'll get used to the new change and you can go about without it or whatever limit you desire.
It's been almost 4 years I'm became a SUPER Fujoshi ! Please give me some advice to stop being a fujoshi..lol (=・ω・=)