I renewed my Baptismal Vows and made a re-commitment to Christian Service which is a recognized rite in my church. I actually did mine as a normal person at a service where our bishop was adminstering Confirmation for other people and received that laying on of hands. This was at 5 1/2 months post op. The Bishop knew and everyone in the congregation knew since I transitioned there.
The Baptismal vow is based on a dying to the old self and ways, so no funeral per se is needed. We do have a Holy Water Font, and I used it in full public view to cross my forehead, again a normal practice for us.