Sure you can watch all your voting power and make sure that a vote on this site doesn't count for this site and might count on this site and gauge if 2% here is worth 1% there and if that extra coin here is worth an extra coin there and manage twelve accounts so you can capture every single vote percent perfectly. But this will require a spread sheet and a LOT of time. Is it really worth it? Or you can just chill and stop worrying about your steem power. It will come back. If you miss 2% here or 10% there it will not kill you. You do need to use your votes everyday if you want to get your curation rewards (and at 50% you do want your rewards) but don't stress yourself out over it. And your power will always go back to 100% so even if you did poorly one day you can try again.
It is not worth the time. You are better off getting a part-time job and buying steem or any of the coins you like then taking hours to make sure you curate 100%. If you are making a full-time living off of it then fine do the math but if you are not, really, do not stress. You will get tired and waste a lot of time you could spend elsewhere. Just relax and vote 10 times a day when you have the time. You do not need to space out one vote every 2 hours for optimal voting. Maybe when you are watching Netflix or when you take a lunch break you can get it done.
Don't sweat it. Crypto is a long game and if you will want to curate as many days as you can. So don't make it so stressful for yourself. And please try to not upvote things in sites where the content does not belong. We want to keep the sites organised as we can and as always post your own original work.
Any tips you want to add to curation?