before you break your lease, try talking to your landlord. Also, keep in mind, it is extremely difficult to get an apartment right now and worst case scenario you are on the street during the winter.

Regarding food, don't be shy to go to a food bank:

Here is a list sorted by cities:

https://www.foodpantries.org/st/new_hampshire

also, all CAP agencies have food pantries.

Apply for FAP-EAP pick the the CAP agency of your county. EAP gives you a percentage-based reduction of the electric bill.

https://www.capnh.org/cap-lookup

And let your taxes actually work for you: apply for everything and see if anything sticks. Specifically you want EBT, SNAP

https://nheasy.nh.gov/#/