Struggling with Executive Function Defects

The more I look into my mental health issues, the more they seem to all go back to executive function defects and a total lack of any tools to manage them... My partner went into the office this morning (we normally both work from home.) I was alone for less than six hours. In that time, I managed to forget to eat breakfast (I made some, I just forgot it in the microwave, and then forgot that I hadn't eaten it.) I also forgot to take my meds. I ate a grand total of three cookies and a bowl of cereal. I got zero work done, because, shocker, I was hungry and hadn't had my meds. He was tired when he got home, so he made me spaghetti-os for what he assumed was dinner and left me to my own devices. I decided I needed more food, but couldn't make myself cook any, so I had what was left of some stew (basically just carrots and potatoes.) And then at around ten pm, I had a meltdown, because I was hungry and understimulated. He helped me boil some eggs and make macaroni and cheese, and now everything is great again. That's a pretty bad day, but honestly? When I lived on my own, everything I ate came from a box or a can. An embarrassing number of days it was just protein bars. My place was a disaster, I had no clean clothes, no clean dishes, was it really surprising that I was miserable? I really want to be "independent," whatever that looks like for me, but on days like this I seriously doubt that I can.