Interesting that you're this low after bounce.

I seem to remember the damage output during that phase being minimal. It might have been my prayer of mending bouncing around like crazy that helps out though.

I highly recommend using your fire elemental on this boss. Helps to take some of the damage and keep the splits off your team. The healing stream totems are probably your best option. Unaffected by the bounce and should help maintain your shaman's health. And yeah, blow your CDs