Well, she "earned" a reduction. I think I would be cautious, as you are probably planning to keep adding wet and taking away dry, and that may drop the numbers more.
She is very likely to bounce up for pmps as her body hasn't seen any numbers in that range in a while. But regardless, I think I would give .5. And plan to get a test before bed to make sure she isn't dropping too fast. If that dose isn't enough and she is higher that cycle and the next, you can always split the difference and try .75 for the next one, but it's easier to raise the dose a little than try to guess how much to reduce.
What do you think, Marje?