Best advice is sit down and have a brew - everything's harder if you're frustrated !!!
Have you tried back filling it - remove the res cap, fill a large syringe with brake fluid, connect syring to caliper bleed nipple (open) with piece of snuggly fitted tube (pref clear) and fill slowly until it reaches the required level.
I've not tried this myself....never needed to, but believe it works a treat.
Andy.