Replying to Swing Weight Issue..?

So I just started doing 3s and I noticed that it always feels like I'm falling off axis no matter how hard I try to lean forward. Could this be because my bindings are not close enough to the center? They are not center mounted I don't remember where they are but it's like 5 cm back or something like that. Would remounting them help or am I doing something wrong and just don't know it? Sorry if wrong forum didn't know which one to post in...