Although not many of us can wait to get our eggs in the incubator to "start" the 21 day clock, it is better to take your time and get the incubator set-up and located in a prime spot before any attempt. You may only lose a day or two getting conditions in the incubator just right, as opposed to waiting weeks praying those temp/humidity variations encountered after rushing to get the eggs started haven't been detrimental to their health. I only say this because it is I who had just rushed getting my eggs in the incubator and had a total failure due mainly to the first few days of spikes/drops and re-adjustments. Now I am starting again after 3 weeks because of my anxiety! This time though, all seems about perfect (after 4 days with the steadiness of the incubator conditions), that I feel no tension or have the worry that this near future hatch may be questionable. It is well worth the extra time to get things just right "before" putting the eggs in. Of course, after the eggs are in and equalized with the bator temps, fine adjustments may still have to be made the first day, so I suggest starting in the morning and being available for the day to make these adjustments. As many periodic checks as you can make during incubation process to insure things are just right will also be helpful and ease the waiting period(plus reduce prayer time)! Happy Hatcing to All!