Milk will break your fast.
As said in this thread, if you’re new I wouldn’t start with OMAD. You’re setting yourself for failure by not easing into fasting.
Begin with a 16 hour fast and see where that takes you.
Typically milk would break the fast. Most people would stick to black coffee and that doesn’t break the fast but adding milk or sugar into the coffee would break it. An entire glass of milk would definitely break the fast.
Its not alcohol addiction that you would relapse.
If the urge is very strong dont useup all ur willpower in resisting it.
Cofee etc is okay but try to lower the quantity & eventually stopping it.