What is the problem exactly? - is it 'hanging' over the rim of pot or? Hard to tell from your photo.

What I can tell is that soil has, possibly, too much peat.

If my plant, I would repot into well draining mix. Mixing Cactus and Succulent soil with sifted or rinsed perlite in 1:1 ratio would be much better. Make sure all original soil is off the roots. Size of pot is ok, you can use same pot after thoroughly cleaning it.

Slowly move into more and more light. Water only when potting mix is almost completely dry.

It is hanging over the side of the pot and I plan on moving it into a window box with some other succulents I also saved

It shouldn't be hanging, stems are supposed to be sturdy, able to support much bigger plant.

You need to eliminate the reason why it is hanging. Was it obstructed by something and is growing sideways? (that would be most simple reason - and not really a problem). Was it watered too much? Was it in low light? (possibly, since it is quite light green).

If my plant, I would take it out of pot. Clean all original soil off the roots and inspect them. Cut off all damaged roots. Prepare new mix (as above). Wash existing pot and reuse. If you want different pot it is ok, but it needs to have drainage hole(s).

Pot into new mix and clean pot. Put in well lit spot and move into more and more light gradually (every few days works well). It should end up in good sunlight - it would do very well outside if you have access to it, during warm months.

Ask should you have any further questions...

There are 2 ways to correct the plants attitude (laying over). After you bare-root and repot into a more appropriate medium, you can simply reposition the plant in the pot so the stem is more nearly upright. Don't fret about the main stem not being straight. I think straight-as-a-stick trunks are mostly boring, and trunks with movement/curves more interesting ...... but that's just me. The other way to correct the 'laying over' is to cut the plant back at repot time - maybe leave just the 2 lowest leaves on top of the main stem. This will force the plant to back-bud (put out buds proximal to (behind) where you pruned it. Choose a bud growing on the top of the laid over stem to be the new leader/top. After it gets a start, you can prune off the part laying over immediately distal to (beyond) the new leader you chose.

Al