Hi Victoria,
This is somewhat similar to my project. I'm trying to get physicians to screen for depression and suicidal ideation. Like my project, I feel like your's is also largely impacted by the system. A lot of how I got my system to be interested is to educate them on the statistics and the costs. Is there information on the risks or negative costs of not taking night time vitals on low risk patients? I think this may help incentivize or increase motivation. I'm finding that to implement standards or a new extra whatever how small thing in physician workflow involves a lot of understanding costs and why they might be reluctant to start this behavior.