CFA4Techie

I spent around 125-150 if I remember correctly. I was still in school at the time so relatively little of the material was brand new. As for how I kept track, I just jotted down the hours I spent every day just as a way to keep me accountable and when I started to see 2-3 days in a row with 0s next to them I needed to get back in gear.
I started to keep track of hours for L2 but it turned into a mess because I studied erratic hours at work, at night, etc. so I stopped trying.
To echo what other people said though, #s spent is not a good thing to benchmark yourself with. People read faster than others, different levels of pre-existing knowledge, etc. I think I was toward the lower end since I do read pretty quickly and had a high level of existing knowledge.