cooking at lunchtime, eating properly then, it is the natural way to do it. It is how we ate when I was a child, everyone home for lunch and it was nice to get back to that after retirement. I don`t enjoy cooking but this is the meal I cook for, simple foods, a mix of plain veg and some fish or meat or an omlette. At least I know that I have eaten well. Getting up early every day, I find it best to do all the chores am, including my veg prep. I use that lunchtime meal as a dividing line and I relax in the afternoon. My last mini meal is around 4.30, just something simple like soup and a cheese sandwich or yoghurt with fresh berries and some granola.
Whether we like cooking or not, eating that 5+ a day is top priority and I usually easily manage 9 a day. Plus proteins and calcium foods. Whether we like cooking or not, we need the intake to stay healthy, to fuel our bodies, they demand more nutrients as we age but luckily we don`t need to bathe our foods in fancy sauces