Eating to quick or fast let down?

So I've been going back and forth on this. My son is 2 months old and chokes/coughs/swallow lots of air at every feeding.. At first I thought it was my let down (could still be) that was too fast and he's struggling to swallow but I noticed when he's calm and sleepy, he nurses fine despite my let down. No choking, coughing, or air. I think it might just be him wanting to eat faster. I watch for his cue so it's not like he's screaming when I nurse. Just wondering what everyone thinks it could be.