We need input, you give us no details to give an answer with.
I would suggest next time when you take a flowering cutting you put it under 18/6 or 20/4, this way it can reveg while it grows roots which both take about 14 days. Flipping it in and out of veg/flower could cause it to hermie, most of us dont want that! The larger plant needs more soil. I find "Voodoo Juice" helps with roots, it is not a fert or nute, but we need to find the problem.
Speaking of soil, what is it? What is the PH? RH? How often and what do you water with?