I'm a first timer as well and have 5 days left according to my incubator, they are mix of silkies 9 out of 15 going strong. I think I will follow your advice as well and take my racks out in the morning and start watching.I hatch silkie eggs and twice have had them pip on Day 18, thus, I do a five-day lockdown.
Is that a blood ring though?
Regardless, eggs technically don't need to be turned their last week. We all just turn them a few days, then do lockdown, so if questionable, I'd pull the racks/turner and stop turning them at the least for now, then jack the humidity up to 60% for a day, then 70% after that.