Q.Hyacinths
I bought a potted hyacinth from the grocery store last spring. I followed the instructions on how to keep it for this year. Once it started showing green through the soil, I brought in from the patio (I am in Melbourne, FL. ) and set it on a windowsill to get plenty of sun. I also began watering it. The plant was doing great for a while, and then I noticed new green sprouting in the soil. In about a week, the new blossoms started to die off and the new sprouts were getting bigger. I know now is not the time for transplanting or separating bulbs. They are currently in a six inch pot. What can I do to get blooms this spring?

Certified GKH Gardening Expert
The following article should be of some help to you:
https://www.gardeningknowhow.com/ornamental/bulbs/hyacinth/planting-and-care-of-hyacinths.htm