I designed a kitchen table sound studio, but it turns out buying furniture moving pads in the UK is much harder than in the US. But that’s the idea.
https://forum.audacityteam.org/t/too-compressed-rejection/52825/22
That’s an H4 on a roll of paper towels. The towels also help isolate the recorder from table and floor noises.
Heavy blankets of any kind will help. Don’t forget to put one on the table.
There is one other technique. Anybody with a car can try recording in the back seat. The car can make a remarkably quiet “studio” in a pinch. One of the production people routinely turned in very good voice tracks and I asked how he did it. He said, “My Toyota.”
How are you doing the coordination between the voices? It’s not like you can make a backing music track and everybody can play to it. If you’re editing these sentence by sentence, somebody is going to the retirement home editing these things.
Koz