I think there won't be any ceremony anymore. Even 23rd march parade seems unlikely to happen. Pakistan is about to enter a major chaotic phase with opposition vote of no confidence move in the next 3-4 days where Imran Khan is unlikely to survive. Without PM, I don't think so anything gonna happen. IK himself will be extremely busy in the next couple of days where he is likely to meet his MNAs and allied parties to back him up.
Parade may still happen with President on the stage alone but with no PM and cabinet members, it will be a low limited event.