Welcome our Taxachusettes fellow. There are at least 10 of us here from the Cape to the Pioneer Valley.
Two spray of myclobutanil is enough to protect against cedar apple rust. It alsi helps eliminate scab, sooty blotch and fly spec, common apple diseases.
If you are determined, you can even grow apples organically here. I grow stone fruit, too, so it is not possible to go all organic.
If you have not seen Scott Smith’s low impact spray, here it is.
Low-Impact Spray Schedule (2019 Edition) - #65 by Lodidian.
Welcome to your new addiction.