I know I've asked this before, but I forget, when does he get food in the cycle? And do you have an autofeeder?
I would go back to 1.25 unless you see lots of green tonight or a green amps. It might not be for long.
Looks like the threat worked. I would give this dose some more time.How about with the 64 @+4.5? Normally he nadirs earlier than that these days, so he could well have gone lower than that. 64 is not a shabby nadir regardless!