Bringing Den. parishii seedling out of dormancy

[sri_vulpa]

I purchased this Dendrobium parishii 'H. H. Huangi' around Nov 24th 2024. It's a seedling in a 2in x 2in x 3in pot. Currently living in the plant room under LED lights, close to the humidifier to create a humid, but not wet environment (think cool misty with a breeze).

The winter rest went well. I've given a couple waterings during the rest with just tap because I'm new and nervous. I dont expect this seedling to bloom yet, but as of recent I saw a new growth. Should i start regularly watering? Should I wait? Do I introduce fertilizer, or do I have to wait for the new roots to get a certain length like catasetums? How much bigger should I expect it to get when it's mature enough to bloom?