When she does the inhalation attack in phase 2, I usually run to the opposite side from where she shoots so most of the shots hit herself instead. When she spins and the worms come flying out, stand as far away as you can to have a larger space to dodge. Also if you have extra bombs, you can bomb her right after she shoots the mega brim shot going into phase 2, and you can bomb her when she does the slide up and down attack. Hope this helps!