Yeah, I just ran into similar problems a few minutes ago:
I managed to get AU 2 down to about 1/4 of it's health, but there are pretty much no refills during that segment, leaving us with no room for error. And I'm nowhere near that good at this battle yet to not screw something up along the way.
As for AU 1, I just spam the dash button whenever I see the Eye Laser coming at me. I can usually avoid it that way. And the only reason I can continue to survive is because of how long it takes to destroy it, which allows me to slowly regen off of the Dark Echoes that keep respawning.
As for AU 1, I just spam the dash button whenever I see the Eye Laser coming at me. I can usually avoid it that way. And the only reason I can continue to survive is because of how long it takes to destroy it, which allows me to slowly regen off of the Dark Echoes that keep respawning.