3 years of work experience is fine with a GPA as high as yours, as long as the experience shows progressively more responsibility and impact. you're correct in that it's fewer than the average, which will put the burden on you to craft essays that demonstrate maturity, judgment, and self reflection. you'll also need to prove how those few years were packed full of rich experience, so that it feels richer than the time frame.
it'd help to know what kind of job you've had during this time, but I'll leave that up to you to share or not.
hope that's helpful,
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