Is the 138 a few nights ago a typo (183) or was it truly 138?
If it was truly 138 I would go to 1.75U. Per SLGS you'd hold the dose-ish, but you have good safety margin still + she only saw it one time + the recent ketones I prefer to increase.
If it was a typo, it's your call. Per SLGS you'd increase to 1.75U. per the more aggressive method, which you technically don't always test enough for, but you have enough data I'm comfortable saying this - you could go up to 2U as long as you can get midcycle tests the first few cycles. I only mention it because of the recent ketones - when was last ketone test and what was result?