My friend has been throwing way too many parties. How do I ask her to stop?

My friend has been throwing parties like every other week since the beginning of summer and it’s gotten to the point where so many of us have gotten really overwhelmed and have a hard time remembering even the small details like the date of the parties or what time we’re supposed to show up. How do we ask her to stop throwing so many parties?

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I’d just tell her I can’t go but then she’ll keep inviting me over and over and over until the party already happened.
My friend has been throwing way too many parties. How do I ask her to stop?
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