Dee knows
My first few weeks I was very indulgent with treats after work: cola, cake, potato chips whatever filled that void for the evening. I shared here about how guilty it made me but everyone said "do what you gotta do in early sobriety."
My desire for these things waned naturally and I didn't gain any weight because after 6 weeks sober I regained interest in exercising regularly.
If junk food snacks don't do it for ya consider some other indulgence: baths, movies, sushi....
Keep the long view in mind, it will not always be this hard. And keep sharing here, these folks got me through that period.