You have organics consuming the FC as you add it, this is evidenced by the very high CC level. You aren't adding enough to get ahead of it. Once you defeat the organics, your demand will be dramatically less, provided you adhere to the recommended levels according to the CYA chart. NEVER let it go below the minimum for your CYA, you need to add enough each night so that your FC is always above 3, so perhaps your target is 5 or 6, you dose to that target in the evening and your FC should stay above 3 for the entire next day. Then that night you test again, and add the appropriate amount to reach 5 or 6.
For now, you need to shock your pool until:
Your FC holds overnight (see the Overnight FC Test instructions );
Your CC is .5 or less;
Your water is clear.
So raise your FC up to 15 and hold it there, until the above criteria have been met. Then you can let the FC drop to normal range and do your routine nightly testing and bleach additions.