Celebrating the Passover isn’t the same as animal sacrifice.
The Passover Sacrifice (קרבן פסח)was the Passover Lamb. It was killed and eaten, no bones broken and the remaining bones burned.
This sacrifice was carried out during the time of Christ in the Second Temple, until its destruction in 70ad.
Jews today have been re-instituting the Passover Sacrifice as commanded. The significance of this year is that the event moved to almost the outer wall that held up the embankment of the Second Temple.