Bassinet collapse mechanisms vary a lot between brands and are genuinely one of the least intuitive to remember later, so check the latch diagram before you fold anything.
Pro tip: Take a photo of the leg lock positions before folding, bassinet collapse mechanisms are genuinely one of the least intuitive to remember later.
Watch out: Forcing a bassinet latch that will not release can crack the plastic hinge, consult the manual's fold diagram rather than pushing harder.