Can can I move out early?

Can can I move out early?
It is the end of August my lease is up at the end of December. I have a 1 year old daughter and I am pregnant. My upstairs neighbors or so loud and inconsiderate I’m fed up. I have call the non-emergency line three or four times, complain to the office at least 5 times, and my fiance has gone upstairs and tried to reason with the upstairs neighbors. We know that they have an 11 or 12 year old son and two or three year old son. Therefore, we have tried to be understanding. However, my daughter gets hooking up in the morning and at night and during the day while she naps. I also get woken up in the morning several times a week because the two-year-old screams Non-Stop. They’re always stomping at all times of the night and we have slider mirror closet doors that get shook violently all the time in both rooms. At this point I feel there’s nothing else we can do but just move out. Is there some way that this can be resolved?

Justin’s Answer
Mr. Freeman’s answer is excellent. I will add that nothing prevents you from asking the landlord to terminate the lease early.