@SavoringEsteban in my expirience I’ve found 2 repeatable ways to crystalize in a Pyrex. Simply pour and wait, ive seen this take up to 7 days to stop forming depending on the quality of your extract. Second method is pour, allow the majority of your butane to evap and gently whip 2-3 times. Every time you whip you should be able to see more and more seeding. Let it sit over night and it forms up usually by the next morning if not by the 48 hour mark. Good luck!