OTT means Over The Top.
And no, daily backups are NOT "Over the Top".
Whether to back up your PC daily, weekly, or monthly depends on what you have going on.
There are developers of apps/programs, photographers who manipulate their photos for publication, writers of the next Great American Novel, etc. Each of these entities will back up their work daily at the very least. Depending on the number of changes in a day's time, they may choose to back up more than once a day.
I teach Windows 10 to Senior Citizens at our local Center. I have to create tutorials for these folks. Yes, I make changes to my tutorials several times in a day, but because I back up my system daily, if a horrible crash occurs, I will stand to lose only a small portion of my work. So, daily is good. I can remember exactly what I was doing in a tutorial, while I probably wouldn't remember the ins and outs of the novel I may be working on. It differs with each individual and their PC.
Then there're the ones who only use their computers a few times a week. For those individuals, a weekly or monthly backup will suffice.
Case in point . . . one of my students said he doesn't have all that much on his laptop, so, maybe he doesn't need to back it up at all. I had to remind him that we're in a genealogy class together . . . what if the worst should happen and he lost all his genealogy research. Yuh huh! He quickly changed his mind on backing up his PC!
It's your decision on how often you back up your PC. Just be sure it's often enough that if the worst happens, you can recover. Daily is not OTT!