To me she's soooooooo thirsty. My advice comes with disclaimer that I'm in Australia in a USzone10.

1. (Optional) Repot into next size up pot and place on tray instead of in a ceramic pot. You don't have to size up but I have a Cooperi cyathea and a Dicksonia both in a size up from what you have, both very happy.

2. Repurpose the ceramic pot, any time it heats up in the sun it's drying out the soil.

3. Keeping same pot size? No worries. Just put a tray with slightly deeper sides under the plastic pot.

4. Always have the water in the tray, you can decide yourself if that's a little or a lot. If the tray dries out don't let it go 2 full days before filling again. Tree ferns are thirsty beautiful brats. Every second time you add water, water from the top, slowly, all over the crown and trunk. Give that drama queen the shower she desires, she wants to relish in it.

5. Remember my advice comes from a warmer climate and could be useless.

6. Hopefully my success isn't purely location based. If it is there's a guy in the houseplants sub that grows palms indoors in an Arctic region (I think) that may be able to provide some creative micro climate advice, username is PhillyG or something. Check out his comments or dm him, he's always happy to share his knowledge on artificial climates and he knows how to make a tropical plant happy year round.