Maybe think about the fact that Jesus is depicted as celebrating Hanukah. The Temple lights filled the night.
Jesus being present at events was because he went where the crowds were. Where every he was present it was to teach and to establish greater realities.
And in regard to the Passover in how it changed from the original night down to the night Jesus had it last with his disciples is not relevant to the topic of Christmas and the claim that it is memorializing the birth of Jesus.
For Jesus' followers there was no need to have another Passover meal in the manner in which it had been done up until that night. He was now the Passover Lamb and the observances of that from that point on (until he comes again) would be about the proclaiming his death (as the Passover Lamb) by eating and drinking of the bread and wine. (his body and blood)