When you water your plants, water them thoroughly. let the water drain out of the bottom and then drench it again. This will assure that the water has saturated the soil. Succulents love water. What they don't love is sitting in it for days on end. It will rot. Make certain you're using a well-draining soil/medium. The last time I was in Austin it reached 120 degrees in our back yard. So, it's good you have it indoors. If you're like me, I ran the air conditioner all the time. This causes more dryness. You have to compensate for that. A couple tablespoons of water every 2 weeks for your plant is not going to cut it. Your last 2 pictures appear to be the same plant I have which is called "Sedeveria harry butterfield." Yours is etiolated. There is no curing etiolation. What you can do is snip off the top portion a few inches and propagate the cutting. Allow the cutting to heal over in a shaded area. Because these are small cuttings I heal them off in about 2 or 3 days. Do not discard what is left as you can propagate that as well. Usually the stem will start to bud and form tiny rosettes where previous leaves have detached. When the rosettes are large enough you can also pinch those off and start your own nursery soon enough. They're pretty hardy plants. Provide more light to them if you can.

First one kalanchoe fedtschenkoi, the second one could be Graptosedum bronze. I'm not sure about third.

It would be best if you take it out of the glass bowl and repot into a pot with drainage holes, into a well draining mix. You can improve the potting mix by adding even more perlite; many ppl use 50/50 mix (or even bit higher than 50% for perlite). Edited to add: just saw above post I am sure it is meant in good humor :) - not trying 'to get on you', just trying to help...

Jemina Be careful of spraying recently taken cuttings. If you keep them wet, they could rot instead of root. Spraying every day is too often - I actually do not believe in spraying plants or cuttings, but that is JMO. It is OK if it is warm, good air circulation, and not so often, and plants are thirsty (usualy, the leaves start shrivelling). Feed of any kind may be too early too. How long ago did you pot them up? Just in case you are not aware, these plants have fine powdery coating on their leaves, often referred to as farina. It should not be rubbed or wiped off. Sometimes it is unavoidable to get some off - on some plants, it rubs off very easy - but try handling plants by the leaves as little as possible.