Question About Eating on Ozempic

I've already procured three 0.25/0.5mg pens but I've been putting off starting because the idea of having to so drastically alter my consumption/eating habits gives me pause. I don't have many vices, but the thought of having to worry that hitting a drive-thru might give me horrible nausea or cause me to vomit for the first time in 30+ years (seriously, it's been that long) makes me nervous.

Any advice or counsel would be appreciated. I know binging is always going to be a bad idea and likely lead to GI issues, but just how much latitude does one have on this medication?

I should also note that this was prescribed to me to get my A1C down. I'm currently 6'0" and ~230lbs.