For me it's not so much a need, I candle every other day or so just to monitor progress

I also use this time candling time as a faux mom went to get some food and drink 'cool down' period for the day... Plus my daughters get a HUGE kick out of seeing inside the eggs when I candle, especially when they see some movement, and since a majority of the reason I'm incubating is to let them experience the birth/creation of life in an egg, it's something that keeps them more involved...
Right now I have another daily attention holder for the daughters... The pea I hatched the other day had a hard time hatching, I pretty much assisted the entire thing after the internal pip, as it became clear early on that this bird just wasn't going to do it their self... The pea has a sever case of wry neck as well as toe problems... It's been about 24 hours now and with some vitamins and a little neck massaging the little guy is 100% better but still far from over the issues... For the first 12 hours the little guy laid flat on his back and rolled around, with zero sense of balance today they can at least sit upright and get back upright... The daughters check on the little guy every hour and give me updates, hoping I don't end of having to cull the guy, only time will tell, the progress so far is promising...