Thats not normal, if your hair is greasy as its being dried you haven't washed it properly. I have super greasy hair and i maybe get 2 and a bit days but when i wash it its not greasy. You gotta double cleanse, especially if your using dry shampoo you need to wash the product out and then wash your hair.
Also clay masks shouldn't be left to dry out completely, i found this out recently and was mind blown you should take it off like just before it dries out.
For someone who spend so much time on "self care" she doesnt know a lot