I get it. One way you can speed things up is to have hot water on tap (either installed, or a cheap, separate hot water appliance) and then use it for dried items like miso soup packets or oatmeal. Then you can add items to it, like pre-chopped vegetables or fruit.
The time it takes to prepare the chopped veggies and fruit in advance is one thing, but think about the amount of time you are now saving for soups and breakfast items.
This is how I think about things like meal plan tacos and burritos. I spend twenty minutes preparing all the items in containers, pack them in the fridge, and then I have fresh veggie tacos and burritos for four days. All I do is microwave the tortillas.
The salsa and the beans will go bad before anything else, so I make sure to use those up in higher quantities than the other ingredients.
I also like to cook a huge pot of basmati rice, Spanish rice, and rice pilaf in advance, so I can make all sorts of dishes for about three days just by adding the other items listed above. When you get in the habit of this, you’re only really cooking for one hour every four days using the same pre-made ingredients. It’s a huge time saver, so it doesn’t feel like cooking at all.