Q: There’s no ‘right’ way to write a book
Some people plan every chapter out beforehand and then write the whole book in order from beginning to end. Others start writing with no idea of where they’re going to end up. Some know the ending but not how they’re going to get there. Others (and I’m one of these) write bits of story in the wrong order and then fill in the gaps and create the whole story at the end. Some take weeks, some take years. Some write 1o00 words every single day. Some write sporadically. There is no right way to do it. You just have to find out what works for you.