I don't know anything about mandrake in particular, but most seedlings like consistent moisture at the very top of the soil. Don't let that top 1/8" of soil completely dry out, while ensuring the soil isn't too soggy at the same time. Soggy soil can cause as many problems as dry soil, due to the rot and disease that can fester from excess moisture. Seedlings are particularly vulnerable to this.
If you're sprouting this bad boy in a windowsill or something where sunlight only comes from one direction, rotate the pot 180 degrees every day or two. This prevents the plant from becoming "leggy", which is when the stem grows weak and the seedling ends up collapsing under its own weight.
Most plants get to a certain point in maturity where they are past the "itty bitty baby sprout" stage, and begin to have different needs that more resemble the mature plant. While I don't know what stage that plant looks to be at, know that as it grows, it will likely want different sunlight and moisture levels from what I have stated above. Do research the care needs of mandrake specifically, as every species is different and has its own needs.
As for connecting with the plant itself, the article I wrote
here can apply to non-tree plants as well. However, I have found that the younger and smaller the plant, the harder it can be to pick up on them. So you may find it easier to get some "practice" in first, with the stronger souls of things like trees. You could then maybe work your way down to smaller plants, and see how you do. I've been at it for almost a decade now, and I still find barely-emerged seedlings a challenge to communicate with. You may find it easier to connect with your mandrake as it begins to establish itself as a more fully-grown plant.