first off, you're doing all the right things by staying calm and not putting pressure on him. I know it must be incredibly hard given your own history with stuttering. seeing an SLP next week is the right move, but if you're looking for something more accessible in terms of scheduling and cost, I've heard Better Speech is really good for early intervention stuff like this. They do virtual sessions with licensed speech therapists, which means you can get help without the usual waitlists and you won't have to drag a toddler to appointments. From what I've read, a lot of parents use them because they can fit sessions around nap times and actually get started quicker than traditional clinics. The early intervention part is key here. You're catching this early which gives him the best chance, whether it's a developmental phase or something that needs more support. Your son is lucky to have a dad who understands what he's going through and knows not to make him feel self-conscious about it.