The one I currently have was a leaf only (about 11” long) when I got it 2years ago. I rooted it in a 4” pot and it grew a 3’ stalk, and I cut the top foot off. It had one blossom about a year after I got it.
it is still in that 4” pot (hence the “bonsai” comment) and has grown to a full 3’ this year, and had 2 blossoms several weeks ago.
William, a large cutting from a matured plant can bloom in the following flowering season, which means as little as just a few months. This cactus grows well outdoor in summer, in part shade, warm, slightly dry out between waterings. It doesn't care much about the soil type as long as it has good drainage, I'd even used ordinary garden soil to root a few cuttings for my neighbor and friends.
IMO, I would let those "stalks" that Ray mentioned, grow some leaves. They normally will produce more flowers from those leaves, or cut the whole stalk off after they have some leaves and root the whole stalk...there, you have a good replacement for an old big plant instantly.
Well, I have the exact same plant! It has grown tremendously, but has yet to bloom. I have raised and bloomed many Epiphyllium hybrids, but really got lucky while at a sheep and Alpaca fibre event. An alpaca owner had it on her table! I asked if she would be willing to part with and she smiled and said yes! It was small but very well established. They are supposed to be incredibly fragrant
Overwhelmingly fragrant. An elderly gentleman in the neighborhood had a HUGE one
growing all over his greenhouse attached to the gh structure. The blooming season
was a neighborhood event in that small greenhouse with over 90 blooms open at
once. I've mostly forgotten that period of my life, but I will always remember that