I can't see it properly from that angle. Maybe a Hobbit jade (Crassula ovata) or even a Coral.

Jaime, the pot has a hole, yes?

If so, and you haven't watered the plant in 3 weeks while it got increased sun, then I'm gonna guess it's completely and utterly dehydrated....which beats the hell out of overwatered any single day! :)

Sorry, but that doesn't look like 'really good drainage' soil...

Sorry to say that your roots are likely rotting. The strange thing (as Grace already explained) is that over-watering resulting in root failure produces the same visible symptoms as drought: inadequate water delivered to the leaves. Commercial C&S soil almost always has way too much peat for successful growing. Amend 50/50 with perlite to decrease water retention.

Take it out of that pot, knock as much of the soil as possible, and show us a photo. You may need to cut the stem and re-root in better soil.

Also please know that rooting succulents in water may seem like a good idea at the time...especially if you're at your wits end and don't know what else to do, it's really not a good thing for the plant.

It may seem that your cutting has perked up and even put out some roots but, you seriously affect the health and vigor of the plant. Succulents that are rooted in water are not as healthy in the long run.

Depending on the type of plant and the size of the cutting, they can remain viable for weeks, months, or longer in some cases. All without Water.

Others (above) are stressing to you the importance of good drainage with your soil.

Jade plants especially so need excellent drainage. There are some that grow their Jades with very little organic components. Even when you buy pre-mixed cactus & succulent soil that does not mean you should just put that in a pot and put your plant in it.

You have to amend that pre-mixed soil. some of us use grit/decomposed granite, turface, pumice, crushed lava rock, coarse large-grain sand and even perlite if that's all you can get.

There are many threads on the forum that can advise you further. search "Al's gritty mix" on here or on google and you'll have a better idea of what i'm talking about.

Jaime, the soil does look quite soggy.

While I know one can grow in peat soil, it's also much tougher in many cases.

I think, first, that your pot is too big. I'd guess that the roots of this plant are not vast in any way, and the small amount of roots can't drink up all that water in all that soil, so even though you really aren't watering a lot (once every 3 weeks or so), it ends up being too much anyway because it can't dry out. And the more it stays in soil it can't dry out, the weaker and worse the existing roots get.

Unless you choose to use a gritty soil, I'd shrink that pot size down to something much smaller if you will use a peaty soil. (I would definitely mix in about 50% perlite--the white stuff you have in your soil already-- as Para suggested; that will help significantly.)

Just as an example, if it were mine and if I were going to use that pot -- I would put in enough soil to fill up the orange part of that pot and no more.

But overall, using gritty mix will be invariably better for your jade and will require much less thought about watering. :-)

Here is one of my variations on Al's gritty mix. What you see on top IS what is the soil---no mulch used. You can see how chunky it is. I have most of my jades growing in this (type) of mix. If you squeeze your soil in your fist right after you water, you can imagine how much water you might get. If you squeeze this, you can imagine there's no water than would get squeezed out even right after watering.

Hope that helps!

I need you to make my substrate, Grace.

I'll send you some of that, too. :-)