Closing down after 4 months

Bought a restaurant in April (have 20 years experience running restaurants, was just done with the corporate world after becoming a director of operations for a coffee and tea brand). Needless to say this neighborhood restaurant is not hitting the sales needed to break even and I'm loosing 2-3k a month.

How do I close a business that I just bought and sill own a shit ton of money on and a lease for a building? is this a bankruptcy thing?