Concerning tapering off food and water... In the couple of weeks leading up to my wife starting VSED, there were some days she didn't feel like eating. I encouraged her to eat which I think was a mistake. Why did I do it? 1) Foolishly hoping she would change her mind. 2) I wanted every last second with her. 3) Making sure my wife is healthy is what I do. 4) I'm stupid. The moral of the story is if someone is going to be starting VSED in a couple of weeks, be OK with them eating less. The weaker a person goes into VSED, the faster it will be over.
I'm 100% with Tillie. Once you start VSED, stopping completely is ideal. That said, it may not be practical. On the day my wife started, there were many family members present. Everyone wanted to take my wife for one last walk in her wheelchair. She went out three times in 95F weather. She got so thirsty so fast. The morphine helps but you will still feel thirst. We had to cheat a little. I gave her about 50ml of water whenever she asked for it. She never ate once after she started. Day two was much like the first day.
The way we did VSED was kind of stupid. I think it would be best to say all your goodbyes before you start VSED. Once you start, go fully sedated to avoid any thirst, hunger or terminal agitation issues.
Two last semi-random thoughts (not directed at anyone or any post):
1) The person doing VSED should be able to do it anyway they want.
2) VSED is voluntary. It would be morally and legally wrong to deny them food or water if that is what they want.
Hang in their Lenore!
Rob