Just got diagnosed today with early onset dementia. I don’t want to be so far gone or drugged up to be functional. I would like to be a nurse for at the least the next ten years to help people. I would i don’t know what they call it nowadays but die with some at least dignity? Also if you have mental problems and are thinking about it in the US dial 988
There’s a thing called an Advanced Health Directive in Western Australia, legally outlining who and under what circumstances is permitted to make decisions on your behalf.
I would talk to your medical team and ask them how this works in your country. It’s also when you discover what the cultural beliefs your team has and if they align with yours.
I’d be doing this sooner rather than later.