I've stopped believing, but I still lead the family prayer at dinner

My mother set the bowl down and asked me to lead the prayer, as she always does when she visits. I said the familiar words. They no longer reflect what I believe.

My change of belief has been slow and private. There wasn't one argument or book I can point to. I haven't announced it because I know my mother will be sad, and I don't want every meal to become a discussion about bringing me back. My partner knows and leaves the choice to me.

For a while, saying the prayer felt like participating in a family ritual. Recently Mum said it meant a great deal that I was keeping the faith at home. I nodded instead of explaining the difference.

I don't want to mock or dismantle a practice that matters to her. I also don't want my silence to become a continuing statement about my convictions. Is there a middle ground where I can be present for the prayer without leading it? I'm trying to decide whether to start with that practical change or have the larger conversation first.