My doctor gave me a prescription for Calazpam because I was having some panic attacks, anxiety attacks to close spaces and I have nee having some issue's sleeping well when I looked at the bottle it said to take 2 in the morning and 3 in the evening. Is this ok to take. I would hate to over dose. My hubby says if that is what the doctor gave me then he should know what he is doing. The dosage is 0.5. any help would be great