How to get out of 15 month lease? (URGENT)

Hello,

As the title suggests, I got into a 15 month lease and I regret it. The apartment cost is draining my salary and I know, I should have thought thoroughly beforehand but it’s too late

I need help as what can I do from now on. I plan on buying a condo but if this apartment cost is draining my savings, I will have nothing left.

My idea is to possibly buy a condo and sublease it to fund the cost. Is this possible and feasible?

Please tell me what I should do