I should have asked also: Do I need to feed my plant during dormancy??
I have flies in the house in summer, but I really don't know how successful the plant has been at catching any so far. And in winter there's nothing around. So maybe I should be supplementing it's diet??

I have the same plant, it is a cross between to varieties of Sarracenia flava. I got mine at California Carnivores, did you get yours from the same nursery?

The plant do need dormancy, but if the leaves are still alive & capturing. So be it. But you don't need to feed it

If you afraid of the plant freezing, make sure you keep it very cool and under low light. Just keep the soil moist, not wet because they are more vulnerable to fungus attack when dormant.

These plants are mostly triggered to go dormant by decreasing light levels more than the temperature. Sarracenia, being native to the US, are quite resilient in low temperatures as long as the roots aren't wet enough to freeze. My climate doesn't test their temperature but I think you'd be okay putting it in a sunny spot outside protected from north wind. Your goal for light should be 4-6 hours.

As far as water... let the tray dry for a few days before refilling. They like to be moist during dormancy but not as much so as when they are growing.

These plants are mostly triggered to go dormant by decreasing light levels more than the temperature. Sarracenia, being native to the US, are quite resilient in low temperatures as long as the roots aren't wet enough to freeze. My climate doesn't test their temperature but I think you'd be okay putting it in a sunny spot outside protected from north wind. Your goal for light should be 4-6 hours.

As far as water... let the tray dry for a few days before refilling. They like to be moist during dormancy but not as much so as when they are growing.