I do not write in chapters.
I do not write to a set "hours per day"
I do not write to a set "words per day"
What I do is, I write small segments or scenes from my book. Say a conversation between two characters. Or maybe the description of a room. Something like that. I find this easier, because I can see a very clear beginning, middle, and end. Not the beginning, middle, and end of the entire book. Not the beginning, middle and end of the entire chapter. Just the beginning, middle, and end of that one scene, which in most cases is 2 to 4 paragraphs long or about 600 - 800 words.
I make it my goal to write three of these segmants each day. One in the morning as soon as I wake up, before I even get out of bed. One in the afternoon, when I get back in from taking my dog out for his daily walk. One in the evening, last thing just before going to bed. It takes about 15 - 30 minutes for me to write each segment. Or about 40 minutes to an hour and a half each day. In the end I end up with about 2,750 words written at the end of the day, but not a single chapter!
I usually divide into chapter breaks at the last minute during the final draft.