Failed my first fast

Failed my first attempt a fast. I wanted to do a 12/12 fast to start, transition to a 16/8 and ultimately be able to do multi day fasts. I had the meals and timeline ready and I started today, I woke up and about two hours ago my stomach was growing an unbelievable amount and I caved, I didn’t even get the healthiest thing. A bagel with cream cheese and hot cocoa. I was at home so at least I didn’t spend $20 for it. Truthfully it’s my fault. My eating window was gonna be a 2p-2a (I work a rotating 12 schedule) and my last meal was yesterday around 3pm so I was really gonna go 24 hours before my first meal. Oh well I’ll try again tomorrow.