Alright, as far as sara brews go, 3 doses is equal to 1 dose of super restore. That means, that for every 3 sips you take of saradomin brew, you need to drink 1 super restore to be able to attack again efficiently. If you have to drink more than 3 doses, drink super restores in the same ratio. As far as the actual fight goes, there really isn't anything you aren't doing if I recall the fight correctly. Try to play it safe as far as you can until you get the kyatt, I remember I kept dying before getting out the kyatt, then once I got it out, I was able to beat it first try.