Please help my nephew and his family!

You guys may not know , but my nephew luka cvijetic was diagnosed with b-cell acute lymphoblastic leukemia on January 26, 2019 at only 4 years of age, he is the most loving and caring little boy and is so full of life ! Me and my family are usually not the ones to ask for help, but in a time like this my brother & sister in law could use any help they can get, my little nephew will have to under go a minimum of 3 and a half years of chemotherapy, they were just in the process of moving and they're rental agency would not let them cancel the agreement because " they could have found someone else to rent it ", my brother will not be able to attend his regular hours at work due to this unfortunate situation, so they will be tight on money, my sister in law is living at the hospital spending every day with my nephew, having to eat out due to the hospital not being able to provide food for her as well, which we all know can get really expensive, meanwhile they also have a beautiful 2 year old girl to care for as well, so please any help would be great and will be much appreciated by me and my family in this time of need, thank you !