Maybe you just need a routine? Have you tried setting time apart in your day dedicated to reading?

I personally read as part of my bedtime routine even if it's just for 15 minutes. Books I read during that time get read fairly quickly. I also read other books outside of that routine and those books take me months to finish not because I don't like them but because I often end up doing other things that take priority.

But like others have said, there is no one "right" way of being a reader.