For the most part, run from the Imperial Guards, and instead break Kaileena's fine pottery, as some have spare sands that will be invaluable in your fight against her. Once you have a sand gauge that is only two under max, you can vault over the Imperial Guards and them after a few hits, getting two more sand slots, giving you full sands for the continuing battle against Kaileena. She summons them twice during the singular fight against her, so you have plenty of chances to get and use Sands of Time.
During the battle, they're often summoned in pairs. Once summoned, Kaileena will fly up out of reach of the Prince, during this time the prince must the Imperial Guards, which almost always drop
Fighting the Imperial Guards is almost an identical battle to the Crow Master fights, except you are fighting two at once. They may seem invincible at first, but even slowing time down s them one combo to doom, and when they die, they release sands.
