The nurse should ask concrete questions and in which a YES or NO should be an answer. Schizophrenia patients find it difficult to communicate, because of the thought disorders that they possess. So, asking a YES/NO question should be most helpful in such cases.
its slowing it down because if you eat snacks in between meals your metabolism will work faster but if you just eat 3 square meals alone then it slows down as it dosent have to digest as much in a certain time period.