My dad just found out he's a diabetic, how can I help him out?

My dad was very sick for the past week or so. He got blood work done and it was found that he had extremely high amoumts of blood sugar; a condition of a type 2 diabetic. Do you know of any possible ways I can help him out healthwise?
My dad just found out he's a diabetic, how can I help him out?
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