Stuck in a forced marriage. Marriage visa is in a few days. Don’t know what to do.

I'm a student in uni and I had a nikah with someone back home. We have never lived together, never started married life together, and have remained long-distance the entire time.

The problem is that I never truly wanted this marriage. I expressed concerns from the beginning, but the marriage moved forward anyway. Over the years, my feelings haven't changed. If anything, I've become more certain that I don't want to continue. I never gave permission at the start (14) but was forced and threatened to marry him.

Recently, I told him directly that I don't want to stay in the marriage and that my decision has not changed. His response keeps being, "What is my fault?" He says that if my parents had told him this, it would make sense, but hearing it from me doesn't. His visa interview just happened yesterday and ive been trying to make sure he doesnt come here because i want div and visa rejection but hes not listening either... and if he comes here itll be too late. I cant withdraw either because of repercussions from family etc. Like no devices school.

He is 29, has a job, and can support himself. I, on the other hand, worry about family backlash, losing support, restrictions from my parents, and being blamed for ending the marriage. What should I do?