Overall I'd say it actually looks healthy, and a good size for its age. Although auto-flowering plants start making pistils at week 3 or 4, they still grow vegetatively until week 6 or so and that'll use up a lot of the Nitrogen. It actually looks like you're pretty much on track! The only tiny thing I see is that it's a little droopy, but still pretty healthy and it'll be a lot harder to over water as it gets bigger, so I wouldn't worry too much about that
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