I have LOTS of trouble with my short term memory. I have always thought it was the narcotics I was on for years, but who knows the reason. I was terrified of people at work catching on to how bad it was. I kept a notepad in my pocket at all times and wrote EVERYTHING down as a running to-do list. Sticky notes didn't work well for me because it became just visual clutter and I would't actually read them. Every day at work I would review my list and re-prioritize stuff. It is extra work for sure ,but it has saved my hide on many occasions. The other problem I had was that I couldn't remember if I had done a task. So on my checklist I would mark it done and the date done. That way when the boss asked me about it I could give an informed answer.
Sorry to hear you are struggling Chaos. Hope you can find some creative ways to cope.