Q.tulip bulbs don’t get larger
My tulip bulbs keep dividing and don’t get larger. What can I do? I planted large tulip bulbs a few years ago. They bloomed once then nothing. This fall I dug them up and found they were really small, with all kinds of bulblets attached. I have cleaned them up. Will dust them with flower sulfur, work in some bulb food and replant. What can I do to increase the bulb size and any pointers on growing the little ones would be great?
Thanks.

There can be many different reasons for tulips not blooming.
The article below is an excellent resource for you to pinpoint the issues.
https://www.gardeningknowhow.com/ornamental/bulbs/tulips/tulips-bloom-every-year.htm