Parent very frail, advanced dementia but still enjoys music & company, registered blind; has dysphagia so IDDSI Level 5 diet. GP last year advised 1500ml daily fluids; care home records show this was achieved only about 60% of days in recent months, but claim they're offering plenty and it's not being drunk. Parent is very slow in eating & drinking; can't see cup & needs prompting to find it (can then lift it & drink). I've expressed concern about dehydration. Different GP - having talked with Manager - now says "no need for fluids target" as people's bodies adapt to having very little; even "survive on 3 cups of tea a day". Websites for NHS, Dieticians, Alzheimers all say elderly should have 1500 - 1600 ml daily. Feels like GP is letting Care Home "off the hook". Comments please! How can / should I challenge this? I have LPA; and I've read CQC Regulation 14.