How to speed up healing of a broken foot?

Hi everyone I broke my foot last week, wearing cast at the moment need to go back to the hospital in 7 days time to find out if I need the surgery to put the screws into my foot. Hopefully I won`t need it but I really want my foot to heal fast as I am going on holidays in 10 weeks to California and Hawaii so I would love to walk without crutches.I drinking lots of green tea, carrot juice, eating lots of greans veg and taking supplements of vitamin c,e, calcium. Please let me know how can I speed up the healing process. Thank you