I agree with @Bamboo's answer, I have this plant as well, and yours looks very healthy. This is a good size of a pot for this plant's size. When you water, water deeply and empty the drainage tray of water. Allow the soil to dry out before you water again. Get used to the heft of the pot when it is full and when it is dry, or stick your finger a good 2" into the soil. If it is dry, water it well so that water is coming out into your plastic dishes.
Then allow to dry out again...I water, more or less, once a week. Less so during the winter.
With what are you fertilizing? I use good ole Osmocote, an extended release fertilizer, twice a year; once in the spring and once in the fall using half of the amount. During the winter they get even less light and you don't want to promote lots of growth without enough light. This could set them up for insect infestations and disease.
Was your 'vegetable soil' meant for potted plants? Was it sterilized for use in pots? If so, the soil is fine. When a plant is transplanted it goes through some stress and that is why it dropped leaves and perhaps looks a little droopy. When I had a covered porch and predictable weather...I'd take all my indoor plants and put them out on the porch making sure that no sun touched the plants. They got lots more light and were able to store more FOOD that the plant makes for itself and stores in its roots. They come back in for the fall and winter looking lush...brand new. Once a year I repot all my indoor plants. Next time you get soil look for soil with Mychorrizae and bacteria to add beneficial micro- organisms to live in your sterilized potting soil. Try not to get soil with fertilizer included. You want to be able to make the decisions of what nutrients and when to fertilize or add nutrients your plant needs.
Did your soil come with fertilizer? If so, do not fertilize it again until fall or whenever the instructions on the bag advises. I've gotten to the point where I don't fertilize until the plant is beginning to show signs of nutrient deficiencies. I think I'm able to know just by looking at a plant (or perhaps it whispers in my ear...) when and what it is needing. But this is based on decades of observing and working with plants.
Your plant is healthy and perhaps needing water soon. Be careful of anthropomorphic thoughts that your plant is a human or animal. They are so very different than us it would be better to imagine an alien from another world! Call IT Mork? Grin.
And one more thing, check to see if all of the stem is out of the soil! If you've got any soil on that stem the moisture on that stem will allow bacteria in the soil to start decomposing the stem, killing your plant. The roots should be the only part of this plant under the soil...same goes for most plants.