I had the same problem on my first try! I’d been trying to do everything and talk to everyone about everything and just drowned in words.
On my second try, though, I took a different approach: what if I am this guy, just want to get the job done, and only do stuff for the purpose of trying to progress the case? That worked great for me, and the game is structured so this still takes you through much of its contents – only, now, there is a purpose to it.
So, thanks, friend! I am indeed now enjoying this game, and I hope you are enjoying whatever you are playing also.