https://www.yourfaithisyourfortune.com/chapter-fifteen
Ive found this thing helps shorten the time needed by a lot.
I once managed to get two girls i liked to sit next to me by imagining it once while waiting the train, and after 10 seconds tbey do.
One sat next to me twice that day.
I can personaly tell it is doable to manifest stuff with some practice using this the same day.