If you’re looking for things to do, I’d recommend
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using loctite on the non-hex side of the axle threads so that side always stays in the yoyo when you unscrew it
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if you prefer a quiet, smooth spinning yoyo, lubricate the bearing
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while you’re at it, put a tiny drop of lube on the axle threads, near the hex key side, so it unscrews easier
But honestly for new yo-yos there’s nothing you need to do, unless you have a problem.
(Also, it will take a looong time to wear out the silicone stickers… and even then I’d recommend a less labor intensive method to replace them, buying some replacement silicone sticker pads versus doing flowable. Much easier.)