Average peeing frequency at that age is every fifteen minutes. Some babies go every ten minutes...some every twenty. What I did when DD was that age was sit on the couch with a stack of prefolds next to me and a bowl at my feet. I kept a prefold under her, and every fifteen minutes or so I'd hold her over the bowl. I caught maybe half her pees in the bowl and the other half in the prefolds.
I wouldn't do that all day, of course; just when I felt like having some diaper-free time. The rest of the time I used a diaper, although I did try to cue her/be aware of when she went and change her right away. Yeah, I changed a LOT of diapers in the first few months.
But if that's overwhelming, then just try for one catch a day...maybe the first pee of the morning, or the first one on waking from a nap. Use diapers the rest of the time, and gradually start trying to catch more once the frequency tapers off. By six months they average is more like every 30 to 45 minutes, and by a year it's every hour or less. The kidneys get bigger...
Oh, and signals are overrated, IMO. Keep an eye out for them, but don't get caught up in them or expect that they'll happen all the time. And definitely don't think that missing them means you're doing something wrong with EC. Some babies don't signal (mine never did really), and even if they do, the signals usually change pretty rapidly (like everything else does during the first year).