The biggest meal is always in the middle of the day. This is because the liver digests your food in the middle of the night and if you eat and drink tons of food at night then it will be overloaded. If you wake up groggy in the morning, it could be because your liver was unable to effectively digest all of your intake. You should ideally eat your last meal of the day before the sun goes down. This will obviously vary depending on the season, but it's a goal to shoot for. The meals should be in the Slow Food style of eating without too many distractions. When you don't eat as much at night, you'll be shocked by how much your body just drops weight.