Ugh me too. I candle maybe once before lockdown now simply by putting the light on them in the turner and removing an obvious clear. Candle at lockdown and I’ve been away from the house for most of my hatches this year.Sometimes I think messing with them less is better.
I DROPPED an egg on day 20 this year candling it. it ended up hatching with assist. That’s the last ive really handled eggs this whole year. I thought I would hate it but I love it. Set it, forget it, and I’m having even better luck.