How long should a prologue be?

in a book I writing for Wattpad l originally planned on making the prologue a oneshot but since the first chapter pick up where the prologue left off I thought I do my readers a service and turn the oneshot into a prologue that way they won't have to read a separate story to understand what going on however I didn't expect for it to reach almost 3000 words I foreshadowed aton of stuff introduced the protag, their parents, and important characters to the story and spent a lot of time in flashback land and the remainder of the prologue in present day then the protag leave the hospital and we see her relationship with her parents, classmates, and therapist once she leaves the hospital and I was wondering if I was making the prologue too long with that information.

How long should a prologue be?
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