I did the exact same thing (but some off brand amazon). Mine is 1.1cuft and is currently running it's initial freeze.
I am still storing in thermos' and in fact just bought a couple more that should be here today. I'm thinking that these tiny freezers have huge temp swings when you open them. It could also keep the peps frozen for about 10 hours if the power goes out or freezer dies.
I also have notifications setup if the temp goes above zero degrees:
My Govee temperature command center:
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