Talking about accommodations before or after being officially hired?

To keep it short, I was diagnosed with T1 diabetes about a month ago when I started looking for a first part-time job, and I have a final interview for a place tomorrow. I'm still in the process of learning how to deal with it, and the only necessary accommodation I could think of that I need right now is taking a quick few minute break to eat something maybe 2-3 times if I start getting low, but I'm afraid that asking for accommodations due to health reasons before getting hired would hurt my chances.

Is this something I should bring up tomorrow, or wait to bring up if I'm officially hired?

Thanks in advance, and sorry if this is a silly question... I just have no idea since this would be my first time working.

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