The restless legs are the absolute worst. I use a weighted blanket but obviously it is far too hot for that. Speaking from my own (Very recent) experience it did pass pretty quickly. Its dreadful whilst it does though.
It sounds as though you have made a good start and you are clearly committed to quitting the evil pills. The first step on this journey to freedom is the hardest step and you have already taken it.
I cannot offer you any advice or tips re taking the pills to America as I have mine on prescription so have never been in that situation. I have taken my own meds all over the world and I have never, ever, been asked to show the prescription let alone get the meds out of their boxes, although I can fully understand your anxiety about this.
Stay strong and good luck