No offense, but if you are trying to quit SI and can't, I'm pretty sure you don't have the control over it that you act like you do.

There are quite a few people who do switch from negative coping mechanisms to different negative ones. I've struggle with SI and eating disorders (and avariety of other things) and I do tend to go back and forth between the lesser of two evils (whichever one I find less bad at the time).

You really should consider talking to a T about this. I know you may not be ready to talk to them about SI but you should talk to them about your eating disorder issue. I've done a lot of damage to myself through bulimia, some that may never go away. Please seek help before it gets any worse. These problems don't just go away on their own and are often the result of underlying emotional issues.

Try to stay safe