I need urgent help with running!

Anonymous
I need to be able to run 1.5 miles in 15 min by the middle of September. I run at least 4 days a week and have been for close to a year. The thing is that after a mile I just can't do it anymore. I'm not sure if I'm giving up or if I just put all my energy into that one mile. I push myself to do the mile then when I stop I feel sick. My mile time right now nonstop is 9 min (not sure if that's good or bad). I tried running for 5 minutes then walk for 3-5 min and run another 5 and then do it all over again so that I'd be running 15 min all together without adding the walking time. I've also ran one mile then rested completely for about 20 min and ran again. I've also run up and down at a pretty steep incline for 30 minutes (walking less than 10mins the whole time but jogging at 5.5 mph).

Any advice on what I can do?
I need urgent help with running!
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