There is always a perfect time and place to raise.

In the titan fight, the healer can just go isolate themselves away from the group cast a raise and leave the area they cast raise at. This allows for the dead player to raise during Weight or after tumults.

In the garuda fight, the healer can do the same thing. They just need to isolate themselves when casting raise then move away from the area and make sure no one goes near the dead body.