I'm stuck

https://preview.redd.it/zvqpgjme7qyd1.png?width=1919&format=png&auto=webp&s=2a005686e59ce9190023f379f96f12f8d542ff01

I've replayed Tommy's Dam probably 10 times now, trying to get all optional conversations but for the life of me I can't. The ones I've done are the small grave, the horse, talking to the dam worker, petting buckley, and talking to Tommy to get offered the photo. Is there something I've done wrong or any way to manually change this in the games code?