Peperomia ferreyrae. Yes, it is a succulent.

Mine is in the kitchen with this type of plant light https://www.amazon.com/LVJING-Vegetables-Greenhouse-Hydroponic-Protective/dp/B07VDPC3D2 for 10 hours a day and loves it. No windows at all.

It's quite a bit larger than yous and in an 18" tall pot, that is "soaked" (never top-watered) about once every two months.

They tend to drop a lot of leaves/needles. If too dry, they turn brown and fall off; if too much water, they turn yellow and fall off.

I suggest constantly pruning new tips or it will get very leggy. If you pinch off the top inch on each branch, they will double and keep the plant full.

If you ever feel like cutting it back in 5 or 6 inch chunks, the cuttings root very quickly. I plop my cuttings in sand and once established (and if they fit) go back into the larger pot.

The way she is growing now, is 100% normal. If you get brave, pinch and prune as suggested.