I don't find it particularly unusual when someone with a 9-5 job spends 5-6 hours at home working on their passion project. But I don't think I could have the discipline of the OP, to spend 4 hours daily on a personal project, and also completing coding exercises and reading tech articles, on a daily basis.
True, she does say that she tries to do these things. At first I meant she does all that plus her day job.
Questions like this rooted in reality have no place here.