Leaving Internship Early?

For context, I am a senior student and I am planning on attending a masters program next year during the spring semester (Graduating from my bachelors this year).

I was recently invited to interview with a company that has an 8 month internship that will require availability into January. Unfortunately late January is when most schools open school for the spring semester.

My question is simply, should I bring this up during the interview and negotiate the end date or should I wait until I am actually offered a job.

Additionally is an intern asking to end the internship one or two weeks early unheard of?

Thank you

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