Post 41, you need to do a Refresh Macro namely:

/ma "Refresh" <stpc>

So you can keep refreshing your party members. I would start Refreshing myself, then start debuffing until your Refresh is ready again. /recast "Refresh" would be a great macro to know. Once your Refresh runs out, refresh yourself again and start the cycle again. Try to MB whenever you can and also backupheal. If you are main healer, sub WHM for optimal efficiency. At low levels, you are expected to heal more than enfeeble, but enfeeble nonetheless just put a little more on healing. Do not melee outside of Valkurm and its flies and goblins. Its not worth it as it raises TP of the mob. Put MP before meleeing if you do. If you run out of MP rest right away back where the mages are. A wand would also be nice to have.

Later on whenever the mob buffs up, Dispel as well.