I've had my ZZ plant (Zamioculcas zamiifolia) for about eight months now and I'm still figuring out the watering schedule

I've had my ZZ plant (Zamioculcas zamiifolia) for about eight months now and I'm still figuring out the watering schedule. I know they're supposed to be drought-tolerant, but I'm worried I might be underwatering—the new leaflets seem smaller than they were a few months ago. Has anyone else noticed their ZZ slow down growth in winter, or should I be doing something different? I'd love to share a photo if I could upload one.