Well, it sounds like a soil problem to me.

That said, you could try supporting the little cutting with a chop-stick or a skewer,
just to keep it stable and upright. You could also try adding a bit of gravel or grit
at the base of the cutting to hold the cutting and the top layer of soil in place.

Josh

Make friends with some small rocks and ask them if they'd pile up around the base of your plant in support - it works wonderfully.

Another thing I'd do is water less.

thanks. i will try it out. thanks all