form not a good healer/healer dps's POV

Is healer dps require? For me, it's yes and no
For the normal dungeon, healer dps is not needed to clear dungeon but it will make clearing speed much faster.
For savage, healer dps pretty much require to clear the fight for most group in the early patch (well, if dps can cover 3-4k dps, sure no need for healer to dps)
But of course, if DPS is not enough, first thing is to look at DPS's damage first rather than tank/heal since it they main job.

Ps. To start dpsing maybe keep it a bit more each time in the dungeon. Don't force all dps in the first place since you still not comfortable with it
Pss. you can /dance most of the time if you only heal anyway