I hope someone on the forum might be able to offer some advice in saving a small indoor cactus.
About two months ago, the cactus fell over because it had become rotten at the base. After looking on the internet for advice on reviving it, I cut off the rotten part of the base and stabilised it in a mixture of sand and potting soil.
The cactus seemed to be doing quite well until two days ago when it fell over again. I noticed only limited evidence of roots--only 2mm long at best. The stem is now translucent and soft. The prickly top is still green and hard to the touch. Water has begun dripping from the bottom of the base of the stem.
Do you think the cactus can be saved, and if so what would be the best course of action to save/regrown it?
Here are some images of the cactus:
Showing the (still?) healthy top:
As before, showing the top:
Showing the rotten stem:
Could the small round clusters at the top be removed and successfully regrown?