Getting a diagnosis for Aryn

This is to help relieve some of the financial stress for my nephew’s parents as they try to get a diagnosis for his medical condition. He has had small tremors for around 4 years but recently they’ve taken a drastic turn for the worse. He is no longer able to get around on his own and spends his days in bed or a wheelchair.. After months of unanswered questions, he’s able to get in to a specialist. All cost will be out-of-pocket due to the specialist being out of state and insurance only covers in state. They will have doctors bills, gas, hotel rooms and loss of income due to having to travel out of state. Any help would be greatly appreciated. And if you’re not able to help, please share this link.