Its planted in a sun to shade location. I read to feed it an acidic fertilizer. Can you name one?
We don't make product recommendations but your local extension agent may. https://www.gardeningknowhow.com/garden-how-to/info/what-is-extension-service.htm
I would wait till spring to apply an acid fertilizer. Here is more about browning needles.
I have a neighbor that has several cypress trees that are fu grown and I'm interested in seeing if it would be possible to take a snip from one of them and get it to grow.
Absolutely! You can take hardwood cuttings or softwood cuttings. Here is an article that will explain these processes: