Ya that's the correct way for cold water extraction. I've used CWE countless times being that Opiates we're my drug of choice for years. I HIGHLY recommend this rather then taking a third. I'd even recommend you take all 3 this way. I know it's easy to think you're missing out on a good amount of the Hydrocodone and that you'll mess it up. Trust me, I felt the same when I did this the first time awhile back. Honestly though, if done the right way (finely crushed pills, basically as close to powder as you can/significant stirring before pouring) your liver will be grateful. Another positive of this way rather than oral intake, you'll have a better more Euphoric experience. Everybody's different but I tested this over a period of 2 weeks on and off. CWE felt better. Hope that helped man.
-XRufio84X