Broken 5th metatarsal, how long to heal, any tips to aid recovery?

The good thing is the the break wasn't complete, as I gather with what you've said. The bad thing is that it is true, it could take up to 6 weeks for it to heal....but this is normally for a complete break. So maybe 4 weeks is logical. There is nothing you can do that will heal it in 3 days though. The best thing is to keep it elevated, and let it heal. I wish you the best of luck.