I feel like my bottom teeth have not moved in over 6 months. Am I moving up to pace? Should I have extraction? (photos)

I've had braces for 14 months for crowding. Note, my bottom teeth are very chipped and it's more about them not being on the same plane. Also, the top can also use a lot of improvement. I wanted to know if anyone suggests extractions, My orthodontist said it's not necessary but my progress is telling me otherwise.

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