Hi Moonrabbit, you can mix in more perlite or pumice in your potting soil, so you can make it more porous.
I have finally been able to check my old succulent photos, your plant reminds me of my old Crassula capitella 'Campfire'. Just showing it here to give you an idea how some trailing succulents grow. Quite a fun plant to have as it changes color hues when it gets cold stressed, so it really enjoys being outdoors, and in my area with some shade during our hot summer days:
30Sept2011
April2012
