> For the past year I've been trying to optimize my life as best I could. This meant cutting out time for food ... [now] I cook all 7 days worth of food on Sunday nights ... it's working great.
Have you considered intermittent fasting? I typically only eat 5 or 6 days out the week. Aside from the health benefits, IF lends itself to productivity; I love having days where I don't need to worry about food or cooking at all.
There are various IF approaches, and it does take some getting used to, but I've found it worth it.