Have to run a mile, but shin splints, help me?

I have a mile time of about 12:15 right now. I have to be able to run a mile under 12 minutes by May 15th or so. My time would be a lot lower if at 8 minutes in, my shin splints didn't start kicking in and making my calves just die out on me. Any easy and quick remedies for shin splints? And while we're on that note, any tips on shortening mile times fast (other than running for fifteen minutes straight at least three times a day lol thats my strategy right now...)
Have to run a mile, but shin splints, help me?
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