The one thing that helps me LOADS was to purchase mouldable silicon ear plugs from the pharmacy and I would stick some gauze over the braces to completely dry them and carefully apply the silicon to spotlessly dry brackets - once that stuff is on it tends to stay really well. I was having problems with wax not staying and melting while drinking hot drinks.
Also, the silicon is clear so you cant see it the way you can with globs of wax, and if I'm having a particularly bad run - I even fashion little 'logs' of silicon and completely cover the brackets and arch wires for a couple of days to give my mouth a chance to heal.
Hope some of this helps and you start healing soon
Jodie