Hmmm. I never use orchid mix for my succulents....I just use cacti mix adding in more perlite to keep it really open and fast draining. Maybe it is time to reconsider the media that you are using, especially if it is too rainy on your side, the bark in the orchid mix will be holding too much water for the succulents. In their natural environment most succulents live in rocky, sandy areas, so they have adapted to hold water in their leaves or stems.
Now if you really still want to use orchid mix, maybe you need to reposition your succulents just indoors by the sunniest window you can find, so you can control the moisture. Those orchid mixes can stay really damp for over 2 weeks indoors, as I have seen in the orchids that I grow indoors. And with the water storage capacity of the succulents, you can withhold watering for a month in that kind of media.
