I am sorry for your loss @Altov
And while I cannot really understand it, I can understand being overwhelmed by life's many commitments. And feeling like a failure for being unable to deliver on this project.
So I say to you what I myself came to understand: this timeline is ultimately a hobby, something to do because it makes you before all of us, happy or entertained. If you do not have the time or even just no longer care about it, it isn't a failure, because there was nothing to fail in the first place. It simply, is how it is.