We are the same it would seem… I chug a lot of ice water before bed, sometimes a cup of tea is nice depending on how strict I’m going. It’s a mental hurtle but eventually I start sleeping better/more because I can’t stand being hungry and sleep is a great way to ignore it…
I’m genuinely curious to know your OMAD dinner that still makes you feel hungry cos the satiety level on OMAD is insane! But if it still persists then I would first look into the diet and make amends accordingly. Like try to add some more proteins to your meal or have a handful of nuts post meal so it can help you tide over the next day easily. Post that these suggestions are really amazing!