I am not making my notes in coherent and chronological order so my notebook would be random stuff of what I was working that day on followed by more random stuf

I am not making my notes in coherent and chronological order so my notebook would be random stuff of what I was working that day on followed by more random stuff from other days. I am using cheap notebooks so I can rip pages from them and then throw them away (if I was just thinking on a paper), digitize them or put them into a folder with pages from same project and digitize them when project is closed.