hi Id say you needa invest a bit of time and $$$.
you need a heat mat
a propagation chamber with a plastic lid, the lid is the most important part, they need humidity very much
coco pellets or rockwool
a rooting hormone
razor
first select several good growth tips, then use the razor to cut the stems to a nice 45 degree angle down the stem
dip the tip of the stem into rooting hormone for 30 seconds, remove excess
cut the tips off the leaves of the clones to avoid wilting
insert the cutting into the medium, making sure not to touch the bottom
keep spraying the leaves with plain water and keep the lid closed on the clones until roots appear ( usually 4-10 days)
In cold weather especially, keep the heat to the rootzone. its the most important part next to humidity.
a good propagation chamber will cost you $10-20 from a garden store
a heatmat about the same
Untill i bought these things and applied this method I lost countless cuttings and had to rely on revegging my plant.
Coco is great to clone in BTW.
Your cuttings may take provided you keep the temps and humidity right
Hope this helps.