If you can monitor, I'd be tempted to take him back up to 2.0 units. Although he might have seen a bit of green at some point, it wasn't obvious. But I would wait until tomorrow to increase if you do, sometimes flat yellow means an active cycle to follow.
BTW: To get more eyes on you, it's better to update your subject title with something like PMBG 104 - stalling - help, instead of tagging people who might not be on.