>>12320109I think the fastest method would be to sell the idea that getting a squirrel gf is the best choice in every way. Humanity would realize its importance and dedicate all their science towards this goal.
Doing it the solo way would not be possible within the little time frame left to live.
Selling the idea using art would probably be easiest, but making art will eventually expand the mind of the artist, making their initial wish less attractive for them, thus spoiling the idea of accomplishing this.