I stopped setting book completion target goals when I realized I was choosing shorter books to hit my target. I then switched to a page-count goal for the next year, but that didn't survive January. (Too much paperwork.)

In the genres I read most (progression fantasy and LitRPG), some of the books are massive web serials, like one "book" this year was ~18K pages. I'm still only about ¾ done since I took a break to read a few shorter series.

Now, my only real goal is to read every day (4 years+ and it's effortless, now) and to try to read at least one non-fiction book/month. (Fell behind on that one this year; life got busy/stressful, so I've been reading exclusively "popcorn fiction" for the last 4 months.)

Also, I read a lot (100-300 pages/day, typically), so one non-fiction/month I don't count as a reading target; it's just about diversifying my reading and doing some self betterment/education/professional development.