That is good that the HC gave a nice bump up in numbers. Don't give any more food for now.
I don't usually give dose advice, so I am not sure the right thing to do, but I will lay out some options if she is still going up.
First, how tired are you? Do you have enough supplies? Can you monitor tonight?
First option would be to skip and give you both a rest.
Second option would be to give an even more reduced dose....like, .75u. Keep in mind when you do this, the depot is still in play and it could still be a very active cycle in which you would still need to monitor. Reduced doses affect more of the next cycle instead of the current one.
Third option, to go ahead and shoot the 1.5u and monitor. We have a saying, shoot low to stay low. When we shoot lower numbers, they tend to have flatter cycles. It will depend on your comfort level as well.