to make things easier next time, train an owl to get the snacks for you

maybe you could place the cat in front of the camera? (so that the camera wont see you)

Give it sleeping medicine (jk, dont do that)

thats why I was joking...also idk what sleeping medication does to the feline digestive system... ,-,

but in the day time, scope out where the camera's blind spots are and try to remember them for the next midnight snack run, if possible