Go get yourself some tall canes and green twisty wire and wen your mediums dryed out use the canes and the twisty wire to create a kind of c shape on the stem-being very careful not to bend em too much and use the wire to tie the branches in place.how much height u can take off depends on how flexible the stems are but even with just normal stems you can take a couple of inches off at least.other than that just try to keep em to the side of the light to stop the tops getting burnt.i thought I had a pic of a plant I had done it with from a time someone else asked the same question but I don't so I,v drawn a wee diagram to show u what I mean.dont laugh at my drawing
obviously yellows the cane and blue is the twisty wire.
You can lose a couple of inches this way but if u need more then that you can do it twice making an S shape instead of a c.just be careful you don't snap your branches.let the pots dry out a good bit first as that will make them less likely to snap.