How to taper off?

I’ve been taking sertraline for over a year now and I want to stop taking it. I’ve always found that it never really did anything for me, the doctor raised my dosage each time I told him this and I have been on 200 mg for 9 months. Still felt no difference. I know you’re not supposed to ween yourself off a medication without a professional but the thing is I’m currently in between doctors because my main one is provided by my university (it’s summer) and I don’t have one back home (family doctor shortage in Canada 🥲). So I want to ween myself off my meds without experiencing horrible withdrawal effects, has anyone been able to accomplish this and can help a girl out? Also what was the experience like? Cus I have a full-time job and I can’t afford to miss work