Stop relying on your mind and rely on things like the email itself and/or a calendar app.
Plenty of people need to take notes and use calendars and alarms to keep track of their scheduled events. You just have the amazing adhd privilege of needing to get used to that practice before you're swamped with more work meetings than is sensible.
Nope. As far as extrusion printing goes: normal 3D printing filament is not food safe and the tiny stairstep layers would be perfect breeding grounds for bacteria and plaque impossible to properly clean. For resin printing: that shit's toxic in liquid form, very bad idea to ingest as a solid, and dust from the hardened prints (like if you sand a nub down) when breathed in works like asbestos on your lungs.