So is it going to kill the flavor? It was in primary for 8 days and now secondary for 3 days.. i was planning on waiting another 10 days to bottle but should i bottle sooner now?
Air/oxygen will oxidize your beer, usually darkening it over time. In hoppier beers you lose hop flavor and aroma quickly too.
Just stop doing secondaries.* They don't make your beer clearer or doing it faster, or do anything better compared to just leaving it in the "primary" fermenter until ready to bottle. Transferring beer always introduces air to it (unless you do closed transfers, under CO2).
* There are a few exceptions, all well outside beginner brewer territory.
Kit instructions are notoriously outdated, and even contain wrong information.
When signs of fermentation start to slow down moving the fermenter to an area that's stays a few degrees warmer can help her finishing out. Temp drops, even a few degrees, are counterproductive, they can stall a fermentation. That's why more advanced brewers use a
temp controlled ferm chamber, a dedicated fridge usually.
When all signs of fermentation have ceased for a few days, wait until the beer has cleared (or pretty much), take a gravity sample. If it's close to your expected FG, do it again 3 days (or longer) later. If both are the same it's usually safe to bottle. Yeast still does a lot of conditioning after the big turbulent event.
Don't stick that siphon or racking cane all the way on the bottom in the trub. Use a carboy cap or siphon clip on a bucket to keep the cane suspended halfway between the trub and beer level. Lower cane as beer level drops, tilt fermenter toward the end to keep the siphoning well deep, and stop transfer when you start sucking up yeast/trub or right before. Use one of those flow diverter tippies on the bottom of the cane/siphon.
And, uh, please use a Brewhauler, or leave her in a crate, to move/handle glass carboys.