- Try keeping your gear up to your level. (check GC often for gear upgrades)
Sometimes the tank can be under-geared for dungeons and if you keep your gear roughly around the same level as the content you are attempting it will help lots. (I've had personal experience healing a tank in brayflux who was just getting his hp chunked.)
- Make sure the dps is not taking any unnecessary damage. (dodging the red circles) Some of the biggest drains to early mp pools can be damage that party members can avoid.
- Esuna is your best friend especially in Brayflux.
- Lastly,try to avoid AoE curing at this point unless it is an emergency. The fastest way to burn your mp is medica. Use your cure. Free cure eventually pops.
Cure is a very strong spell. It should cover the majority of dungeon healing. Add Esuna and Stoneskin and your mp pool should last quite a while.