Mother of Chicks
Songster
As they get larger you're more able to see the rocking from the chicks movement. They might not hatch early but there's no harm in putting them in early lockdown. You may want to wait until you see the air cell drawing down early, pips, or day 18/19 before increasing the humidity. Base increasing the lockdown humidity on how your air cells look. I often stop turning my eggs a day or two early but I won't increase humidity to 65% unless I see internal pips or the air cells are large. Good luck on your hatch!
Thanks - yes I was thinking I would remove the auto-turner and add the hatching mat. I'll keep on candling and hand turning until 'normal lockdown' or the internal pip. It's all so exciting <3