I made a mistake and made a run with 14/2 when it shoud have been 14/3. Not a big problem if I do not make the plug work on a switch like I intended.  There is another switch box with a different circuit very close. Can I  divide the neutral and run a wire from there to the other box creating a shared neutral? Both circuits are wired with 14/3 and are 15amps. I am missing the neutral at the beginning of that circuit. The circuit starts at the panel, to the plug I wanted switch controlled, to the switch and then off to other plugs and switches. I neede to run a 14/3 from the first plug so I could bring both the white and black to switch box so it could continue to other plugs and then used the red to run switched power back to the first plug.

Thanks

Kev