I am thinking that the numbers may have dropped lower last night and what you were seeing this morning was the numbers on their way up. It is so hard to judge what is happening and you did make the right choice doing a token dose this morning without more data from last night. My thought is that you should go back to the 1.25 unit dose tonight, but if at all possible try to get a reading or two during the evening cycle. With the reduced dose this morning it would not be unusall to see higher PMPS numbers.
You have shot numbers similar to the AMPS before and if you are going to be home to monitor it would be a good plan to shoot those same numbers. Govie hasn't shown where she is prone to doing big dives so as long as you can monitor the AMPS would have been fine to shoot.