Are you a patient person? You'll need to be, to get it flowering again. It's a long and rather complex process.

Beginning on October 1st, keep your plant in complete darkness from 5 pm to 8 am. Any light will delay blooming. Use a box or material to block out light, or put the plant into a dark cupboard.

Move the plant back to a light window during the daytime and continue watering and fertilizing.

Around the last week of November, you can stop the darkness treatment and allow the plant to stay in the window. You should see flower buds appearing.

Stop feeding it in mid December. Keep watering it. With any luck, it should be back in bloom for Christmas.

Good luck - to be honest, I'd buy a new plant. ;-)

It also depends on where you live. If it can thrive outside, in the ground during the winter, then it should do it on its own (outside). If not, buy a new one. They are native to Mexico, which should give you an idea of what conditions they need.