I don't think there are specific conditions for this species. You obviously had the right conditions 10 years ago, and it looks as though the plant has grown a lot.
Has anything changed?
All plants need good light, especially in winter, to help flowering.
Nutrients that help flowering are potassium and phosphorus, so a soil mix that favours these, or a fertiliser that has more of these than nitrogen would also be good.
Some Mamm species (like senilis for example) like a bit of cold during the winter rest to help them form flowers in Spring, but as this species comes from Oaxaca, I would not think this is the case here.