What you did has no effect on how soon you'll get a Shiny.
The reason you couldn't find a straight answer is that you misunderstand what 1 in 8192 means. 1 in 8192 is your chance of finding a Shiny on any given encounter. It is not a timer that goes "ding ding, shiny!" when it crosses 8192. You are just rolling the proverbial die over and over until it gives the outcome you want. The die doesn't care that you stopped rolling it and did something else for a while.
The reason you count your encounters is so you can shake your fist at Junichi Masuda for not bestowing a Shiny upon you despite 15000 encounters. That could happen to you, or maybe you will load up your game tomorrow and it'll hand over the Shiny first try. All you can do is keep going and find out, or maybe try ways to increase your odds.
