I am not clear on what type of rental unit you have but at least you have a general idea what the landlords can do ...Good luck in your travels....
What do you mean How can I port?
You are breaking your lease - some owners will sue you and some will let you go.
Ask if they will cancel the balance of your lease and let you off the hook, get in in writing.
Otherwise you are stuck.
Can you sublease?
Going to be a hard sale for 3 months only but its worth a shot, and then again if they ruin anything you
are on the hook.