It's okay with me too.
I signed up knowing the risk that I might lose if I was busy at the time of the game, but I figured I'd sign up anyway and see how long I would last and be able to attend. I know I will have future conflicts coming up that will prevent me from playing at 3pm ET, but I won't let you know when to keep the consistency and to not interrupt the game for the others. And that's okay with me! So no need to move things around.