1: I say yes, meaning that it would seem this way to the dreamer. There’s the theory that time slowed down in dreams works because the dreamer has a lot of FM after waking up. If you can in fact experience everything for real rather than relying on FM’s is another question, and I can’t think of a way to proof it right now.
2: Nope. I tried to use the dream clock, but didn’t manage to.
3: The dream clock is the only technique I know of.