You are only rushing the fermentation process if you haven't checked the current gravity. Check it 2-3 days in a row and if the FG hasn't changed, it's done fermenting. It may still be going to through some cleanup, so you could always leave it for another 3-5 days, but that's entirely up to you.
For a porter, honestly, I probably wouldn't rack to secondary unless it was to add something else (ie: if the vanilla beans are going into secondary).. if this is purely because it what you were told to do, there is little point and gives another opportunity for infection. Feel free to rack to your bottling bucket with the proper amount of sugar to carbonate and bottle away.
If this was a lighter beer, I might consider racking to secondary to cold crash, but with something dark like a porter or stout, clarity is not usually a concern.