My brackets keep breaking what should I do?

My brackets have been breaking 3 months in a row. I'm starting to get frustrated with how often I'm breaking them. I haven't been eating anything hard or sticky. When I wake up in the morning they are broken. My dentist doesn't take me until my monthly check up which annoys me because I feel like my treatment is going to take longer then it's supposed to. I can tell my dentist is getting mad at me but I'm not doing anything wrong. I keep telling him but he doesn't believe me. What should I do?

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