What are signs that our friendship is ending?

We’ve both been through a lot and been United through all the drama and foolishness we experienced in our friend group, from other friends. We both got harassed by one each for years. Now we’re meeting new friends. Recently, my best friend has said that we’re hanging out too much, by hanging out a few times a week and talking daily, that she finds it overwhelming and just wants to talk on weekends from now on. We’re not catching up as much or talking as much. Is that a sign that we’re becoming either casual friends, or not friends anymore?

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We’re both autistic. She’s an introvert and I’m an extrovert. Both extremes in that regard.
What are signs that our friendship is ending?
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