My son is going to get fitted for his first pair of night splints. I know there are different types, and I am wondering what to ask for. Alec's PT said the softer boots do not work as well as the hard ones, as for as stretching goes. He is starting to walk on his tip toes, especially at night. He is 4, and is not a very good sleeper to begin with. He has suffers from restless leg syndrome.