In the time I’ve been planning my trip (between 180 days out and 140ish), Disney has changed the Extra Magic Hours at least twice. Do they normally keep fiddling with their schedule as it gets closer, or is this a weird anomaly?
nah, it’s normal. Usually it won’t be until like 1-2 weeks out before the hours are more solidified set. It’s always extensions of time though unless someone rents the park for an evening.
With SW, it’s going to get even crazier for a little while.
The opening of Galaxy’s Edge is a one-off event. Hence all the Extra, extra magic hours and so on. But daily EMH were also used when both Pandora and Toy Story Land opened, just not to the same extent.