How to eat enough calories in a day on omad?

I’m not sure how accurate MyFitnessPal is but according to it I’ve only been getting about 800 calories max on some days and as low as 660 on others. I’m always full and have enough energy to go about my day. via /r/intermittentfasting https://ift.tt/ai0eKX5 https://ift.tt/dqIFj1u