Yes, it's normal for it to filter slowly.
And almost every single time I see a CWE discussed someone asks if they can dry it out or snort it. You can, in theory, but the end result is you lose more hydrocodone in drying the mess out. Or you have to waterboard yourself with your hydro-liquid. And you don't really gain anything - hydrocodone, codiene etc arfe perfectly fine for oral usage.
Generally people don't bother doing CWE's on less than 5 or 6 pills, because it's hard to work with such small quantities. Honestly it starts getting effective only if you're taking multiple doses a day, doing it everyday for months, or you're eating 10+ pills in a go. At your level you shouldn't really be using more than a tablespoon or two of cold water. No worries, though, you can always just drink the sludge you've made if it doesn't go nicely. And the only downside from using too much water is you must ensure the water is ice cold or you'll dissolve extra acetaminophen.