How long does the soul spend in a subjective state?

How long does the soul spend in a subjective state? 

There are many hundred years sometimes of your time given to the worn and weary soul but how long depends upon its condition and strength.

Does reincarnation sometimes take place immediately?

The soul is sometimes unwilling to take its rest and, as you must always remember, the soul is always free. It is given to some advanced spirits to see into the future and they elect of their own accord to do their appointed work without rest or refreshment. They do not often return to your earth, it is only one of unnumbered worlds and there are many others where they can better carry on their preparations and with unerring certainty, the soul seeks its best place.

—Insight