I grew my avocado plant from seed this spring. It’s been doing amazing, water it every 5 days or so and sits directly in the sun. I live in Canada and now our winter is hitting my avocado pretty hard. I use the planta app which is telling me I should only water every 2 weeks in my climate. The leaves are starting to turn brown, curl up and are very dry. The top layer of my soil is also quite dry however, everytime I add a little water it seems to only make it worse. Is this a sunlight/ heat problem or over/under watering? I keep it on my window ledge during the day (has the most sun exposure) and then move it aside at night so it isn’t as cold.
I’ve attached photos for reference, any help would be great
As you can see the leaves are curling and burnt. Has turned this way within the last 3 weeks- month.