What's 'proper' is what works for you.
That said, I'd be HATE'N a 14/45 setup! You gotta be killing your clutch!
If the way it is suits you fine, well....fine. It wouldn't cost much (get one cheap for <$15US) to get a 13T and give it a try. If you like that better, then at least you have a direction to go.
You can change it in about two minutes.
Note..the 13T will be smaller than your 14T. If you're already at the edge of chain adjustment (too long) you may not be able to adjust to the proper tension. Probably good enough to check out the result, though.
btw..I use 12/47. You end up shifting LESS 'cuz you may well find yourself in a higher gear to start with..ie: an uphill that took 2nd you'll do in 3rd. That'll make you FASTER at it, too!!
(oops...too many!!! ;) He's right, though.)