First, don’t worry about the turning. They really don’t need to be turned after 14 days. It doesn’t hurt but it’s not required. No harm was done by them not being turned.
The humidity is a little harder. The reason you manage the humidity is that the egg needs to lose a certain amount of moisture through the porous shell during incubation. If the egg loses too much, you can shrink-wrap the chick before lockdown. If you don’t lose enough, you get what is called sticky chick. That’s where the chick is too wet, big, and soft to position itself for hatch or the air cell does not shrink enough to hold enough air for it to learn to breathe in an air atmosphere instead of a liquid world. That’s when they “drown”.
The good news is that there is a pretty wide range of humidity that works. You don’t have to be dead on a very precise number. Part of that is because no two eggs are identical. Even if laid by the same hen, each egg will be put together a little differently so different humidities may be ideal for each egg. Part of that is how long and how they are stored before you start incubation. Nature took care of that by making a range of humidity that will work. Also, it is not an instantaneous humidity. It’s an average over the incubation.
I can’t tell you how much difference raising the humidity a couple of days early will make in your hatch. It may make absolutely no difference at all. It may cost you a few chicks. There are just too many variables. I’d still expect some to hatch, but I don’t know enough about your entire incubation period to even be able to make a good guess.
Good luck with it. Many of us have decent hatches even when we mess up. Those eggs can be pretty tough.
