Hello,
Welcome to the ehealthforum and I am really glad to help you out.
If your uncle on your mother's side has schizophrenia, then chances of it being passed on to you and your brothers is very less likely. In a study, the risk of schizophrenia is less than 10% and close to 2 % only if your uncle is having this disease.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care.