Hi...
in all my reading on here, when in doubt about watering don't....
if you think it is to wet, what I would do is take it out of its pot and take off as much of the wet soil as I can and lay the cactus on news paper or paper towels to dry out the soil and then repot with new soil, don't water it and give it a chance to recuperate....
cactus can go a very long time without water....
I don't water my cactus all winter in fact I just watered mine 2 weeks ago for the first time since last fall when I moved them indoors for the winter....all are doing fine, but I guess I over watered my stapelia..it rotted and I tryed to save part of it but it rotted too....
well, just passing on what I have learned from the people on here I hope this helps and I am sure others will help too...good luck.....linda

Thanks linda,
i did the same as u told. Hope the plant gets getter.