Trading in my Mustang Ecoboost for a GT?

I rececently bought a 2016 Ford Mustang Ecoboost Premium with Performance package it was 36,500. I gave 12k down and am currently financing 24,000. I’m regretting my decision and want to trade it in for a GT Premium. I’ve only had it for 3 months and it currently has 600 miles. I want to know what to do. Should I trade it in now or should I wait few a months?

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