You may be going the wrong way. The mind rooms require you to target and kill inanimate objects, while preventing your character from directly looking at any skulls.
The hitboxes of the rooms, though, do not match the rooms they actually are in, some of them are quite small.
Edit Since I don’t see an Ulduar completion on this toon… it’s okay to wipe a couple times in the mind rooms to figure them out fully. You actually have a lot of time in there, so don’t panic and try to speed through them.