Don't worry about the questions, without questions you don't learn.
What exactly do you mean about cutting the top half of the plant? I just meant top the plant, you know where the top young shoot is, cut it off.
But if you want to take cuttings, yeah you can then shorten the plant a little by cutting some off the top of the plant and treating them as cuttings. I have watched may videos on taking cuttings. Soil is no good for rooting them though, I have tried and failed. Honey is a good antiseptic to keep infection off the cuts but I don't think it is any good for actually getting the roots to grow. I came across an ingenious idea for rooting cuttings.
If you have any Willow trees in your area, take quite a few of the freshest shoots off the end of the branches. They are usually still green and have not went dark wood coloured yet.
Then take them branches and take all the leaves off being careful not to rip the branches outer green coating as this is what you need. So once you have de-leafed them, cut the branched into 1-2" pieces and then boil them in some water and then leave it to sit overnight.
Strain the 'tea' through a sieve or something to get all the leftover branches out and then use that mixture to root your cuttings.
Leave the cuttings in the mixture till they root then pop them in soil.
Willow branches has a very high amount of hormones that promote root growth.
Look on youtube for some videos if you want to see it instead of just reading it.
For the amount you have spent on this setup you have nothing to loose so experiment, you can only learn what works and what doesn't.
That is good news that the light has slowed down the stretching, so now would be a good time to get cuttings in so that new plants can grow properly instead of shooting up like the mothers have.
One last thing, if you take cuttings, put one of them into 12/12 light to encourage flowering to find out if you have females. Then you can be sure your crop will produce bud!
