Oh, man, that's a difficult situation. I don't suppose you have a friend or family member who'd be willing to take Kai in until you own your place?
It varies by state and municipality, but generally speaking, if you have a lease, landlords can continue to charge you for the remaining months the place is left empty, if they can document that they are seeking a qualified tenant. So you can end up on the hook in small claims court for quite a bit of money, if the local market is slow and/or the landlord is tricky. Breaking a lease can also cause a massive hit to your credit rating if your landlord reports it to the credit agencies.Typically, when you break a lease the owner will keep the last month's rent and deposit.
You can just walk out forfeiting the last month rent and deposit. There should not be a penalty.