Oh! That's interesting. Why do you sit back against Tailturner and Pomburner?
I've been attacking all targets except for the 7th one (whoever that may be) during phase 1. I am always mindful of my MP and usually don't want it to go below half. And I use Invigorate a few times to build TP for Second Wind. But I guess you gain TP against Furryfoot, Woolywort, and Shaggysong by getting close and using auto-attack against them?
Right before Memento I'm usually tasked with using Sacred Prism + Stoneskin, then self buff with Sentinel and Sanguine Rite so I'm back at full MP for when things get crazy in phase 2. ^^;
ps- The Mogwand and Mogstaff don't restore MP on spell casting, do they? Only the melee auto-attack?