A few weeks in if that’s your first fast.
For example, I started 23/1 omad, first day were hard especially as I enjoyed to snack a lot of salted stuff (chips, cheesy puff etc).
Now I stick to 1 meal a day, I slowly lost the food addiction and snacking urge. Just do something else instead, your body will adapt and the hunger goes away. After a while, only eat one meal a day just become easy and get to your routine, you no longer wait for that meal, you just enjoy it when it’s time to eat and that’s it !
For longer fast (1-8 days) hungers goes away the second or third day for me.
Good luck
For me it took around 2 weeks, so roughly 4 cycles of 72 hour fasts with one food break day beeing the fourth day.
By the third cycle, I noticed it was easier getting into the fasting groove and by the fourth one even my wife made a comment about me complaining less. 😄
I found it helpful to track my weight every day, as working towards a goal instead of working away from something keeps motivation higher on average.
Also, if you tell yourself “not yet” instead of “I cant” makes it better. Less final. A bucket list of sorts, if you will.