m0useanswered grow question 3 years ago Breeders make Fast version that finish a week or two faster then their none fast versions.
This is done by mixing in some of the autoflower genetics into the buds, 25-50%
It wont be an auto flower but it will be faster.
the follow weblinks also give suggestions.
https://www.royalqueenseeds.com/content/62-fast-flowering
https://www.leafly.ca/news/growing/fast-growing-cannabis-plant-strain-varieties
Best Of Luck