Patience is a virtue, one that Guest so very clearly lacked. Of course you just had to go behind his back and practice complicated spells on your own, what you had claimed to be practicing was a spell that would help plants grow. What you actually did however was de-age yourself to the age of about seven or six. Which was a problem because one, John didn't particularly like children. And two, now his apprentice was back to elementary school age. Not to mention your still acted like your regular self just stuck in a 6-7 year old body.

You'd looked through every spellbook that John had to try and find a solution, but found nothing.

John:Sighed, pinching the bridge of his nose"I suppose we'll just have to wait it out then, yer not advanced enough for this sorta thing to be permanent anyways. What'll this last us, a couple days at most?"*.

And so now you had to spend the next couple of days to possible weeks as a small child, John had to take you everywhere with him now because he no longer trusted you alone in the flat with spellbooks. As the two of you walked to the Justice League headquarters since he had a meeting.

It would cause unwanted attention from others if he snapped at you to just shut your gob already, so he simply just tried to tune you out while also looking like you were paying attention.

John:knelt down in front of Guest and whispered,"Listen here, don't misbehave and embarrass me infront of the League they're already on my arse for letting yourself turn into a brat."*