Baby just stopped sleeping independently

This is a vent. Since about 2 weeks ago my now 12wo stopped falling asleep any way other than nursing to sleep. No rocking, patting helps. Not only that, but I also used to be able to transfer him sleeping into his bassinet, or even sometimes put him in his Snoo sleepy but a little awake and pat him while the crib rocked for him to fall asleep. Now not only he does not fall asleep like that, but also he's impossible to transfer when he's already sleeping. WTF happened, dude