Since you're there, I agree I'd hold it a cycle or two and see what happens.
Back to a momentary rant :mrgreen: I'm concerned that everyone seems to think a flat curve means too much insulin. Typically a flat curve means too little insulin. A high flat curve, like all reds and flat, can be chronic rebound, but you only get chronic rebound after a prolonged period (I have no idea how long) of acute rebound, which Shakes most definitely does not have.
There are some times with PZI where we have seen dose "resistance" where the #s are so-so and then a lowered dose works better. So you are trying the lowered dose to see if that is the case. If the #s don't quickly drop down to better #s then that's not the case. When it is the case, you might see something like all yellows one day, and then you lower by 0.1 and get an immediate green nadir. Then you can deduce that the higher dose was high enough that they resisted it, and with the slight lowering you got the nadir that is now safe to get b/c they sense the dose is no longer too high. I don't know if that's really how it works, but I have seen that pattern.
So far the 1.75 just looks like too low a dose to me, but still might as well give it one more cycle since you are already here. As far as the #s looking about the same on the different doses, it may be a sign that all of those doses are too low. Sometimes on PZI it just seems like it isn't doing much until you get to a dose that is high enough that you start to see some action.