I'm a dummy and new to gardening. We bought our first house in autumn and everything is overgrown, so I have have been systematically cutting back pretty much everything in the yards. There are 2 hydrangeas at the house, one in a shady location doing phenomenally, and another in a full-sun location that looked stressed and bleached out (the flowers were pale brownish blue instead of a bright blue like the other bush). Frustrated by other overgrowth in the yard and not bothering to check and see how they set their buds, I cut it back to almost nothing after parts of it collapsed after a snow storm. I know it's in a bad spot for it's needs, and it's in a rather inconvenient spot, but I know how beautiful it can be when in full bloom so I'd like to keep it if possible.
Can it survive being cut back to almost nothing (I know I won't be getting any blooms this year), and will it stress it more to be moved across the yard to a shadier location where it would be more successful long-term?
Basically, I messed up, what do I do?