I ate at 6pm, do I need to eat again?

Of course you need to eat again, but the timing and content depends what you just ate. You wouldn't be getting up in the early hours for food if you had regular nutritious meals.

I posted that 21 hours ago and that was like what 10pm. That's why I was asking do I need to eat again after eating at 6pm. I felt a bit weak that's why I was asking. In the morning for breakfast I ate fried rice and egg and was full with potato curry, a couple of hours later I ate a muffin and that's a snack, then I ate rice and curry for dinner or something and because I felt weak I ate rice pudding and then a drop of Lucozade. Before dinner I felt weak so ate dinner and after dinner felt weak after a couple of hours and ate rice pudding and a drop of Lucozade. That's a lot for me.