Setting a time limit for the spirit

I’ve been reading here how people set time limits for demons so that the result comes within the time frame that the occultist gives. Is this a good idea to do. And if the demon fails to do so within the time frame do they still work to get the result or do you have to do another ritual because the result you sought was unattainable in that time frame.

Its always a good idea to give a time limit, that way you can be sure that the ritual you did was successful or not.

Not sure of the rest of it.

You need to ask what is possible in your timeframe. Giving an entity a week to cause someone to fall in love, separate, start divorce, move out, and want to live happily ever after with you is unreasonable, but you can ask for a progress report.