I suffer the same problem. I can walk out to my van to get a tool or fitting. Open the side door, look at all the stuff, then close the door because I don’t know what I needed.
I then return to the task I was doing only to remember what it was I wanted! I must clock up some footsteps doing that.
Ask me what my business account number and sort code is..... no problem. Ask me my NI number, not an issue.
What did I have for breakfast this morning..................? 🤷🏻♂️