Hi,
I have a major travel meet in one month but as it stands right now I am about 15 seconds of my 1600 time for being able to go for my school. I'm thinking of boosting the mileage from 42-47 to around 60 mpw by adding a double in the morning, but is there really anything else I can do? 4:48 is my pr.
Don't do this.
The kinds of things that might actually produce some short term gains are also the kinds of things that would sacrifice your progress over the rest of the season, and a March invitational isn't worth it. Keep your eye on your real goal.
Yes, you can raise your mileage sensibly. You can get more sleep, do every bit of the workouts your coach assigns, and work a bit harder. Those are all things that will help you out by the end of the season, but may not pay off in 4 weeks. You may even feel slower as the extra work causes additional fatigue and you wait for your body to adapt.
Aerobic fitness takes time to develop. Raising mileage for a month isn't going to significantly improve that fitness and could even possibly result in you backsliding due to fatigue, illness or injury.
Listen to these people.
You could look at pacing (trying to run even splits if possible).
Focus on nutrition, hydration and sleep to give yourself the best chance.
Do some strides.
Increase your mileage - to 50mpw. Not every week. Rest before your race if that's what works for you. You would have to run faster before this meet to go, so you have less than 4 weeks.
I wouldn't try to knock off 15 seconds in one month. It's asking for problems in my opinion.
I would focus on your summer season and a slow build up. Sorry, I am not sure which country you are in but you will have some outdoor track races? Please do not injure yourself over this, it is not worth it.