I'm sorry I missed the last meeting. Unfortunately, that time doesn't really work for me anymore--I just keep forgetting until it is just upon us. But I finally remembered ahead of time this time.
I don't have anything in particular to add at this time, and so it's okay with me to miss next week's meeting, but could we find an alternative time slot for the future? The old time slot usually works for me, or a noon ET meeting would also work.