The only thing I noticed is that the size of the pot has a huge effect on its growth.

Apart from that, I have no idea what I'm doing right. It may be the sunny, south-facing window. I have harvested several pineapple fruits over the years. They seem to be absolutely unstoppable and unkillable and predictable in their growth here. They don't care about seasons (it's snowing!). The only time I managed to kill one is when I put the pot outside in summer - it went bad in just three days.

Older photos: https://log2.ch/gal/ananas/