I do it about as low tech as you can get. I think I started with 15 cuttings and lost one. I didn’t get it seated in the coco or missed it when watering / feeding. This group pic is from almost 2 weeks ago.
I am happy to help if I can. I do nothing special. Most of the cuttings were taken when I was preparing to flip them.
When I first attempted cloning I asked a very experienced grower which cutting does best / better chance of surviving
If I had to use the bigger one I would remove the set of leaves and growth points just below the top and then cut the stem about in half. The nodes are good root producing areas so that is why you try to make use of them.
If I can help, reach out to me at GDP to start the new year