what is problem? Is it due to temperature changes or irrigation? The temperatures can fluctuate by 3-4 degrees during the day; could this be the reason?

Yesterday my plant's leaves looked healthy and strong, but today they are drooping. I watered it 700ml of water two days ago, and I'm going to water it again today. Should I increase the amount of water or water it every day? How often and how much water do you give for 11L pot