Hi - I have the same problem, though Jack is now 9 months. I'm sure someone far more knowledgeable will be along shortly, but my researches suggest NOT to clip/cut the coat. Handstripping only is the way to go for a classic Cocker look. Trouble with this is that you have to wait until the adult coat comes through - I'm still waiting and Jack has looked like an exploded cushion for months. It's frustrating not being able to tackle him with the scissors (though I do tidy his feet), but I'm hoping fighting back the urges will pay off in the end. Not saying you can't clip, lots of folks do, but I'd be a bit wary - lots of Googling and reading the Grooming section (a gold mine of info) will pay dividends.
I plan to hand strip myself. Time consuming, but don't want to rely on someone else and finding a reliable groomer can be a PITA.
In the meantime, daily grooming and fiddling with head, feet, tail etc is the way to go, so she'll get used to being 'messed about'. Jack still doesn't like his front paws being touiched - I have to do them when he's half asleep!
Good luck!