transit in Naha airport with 2hrs time buffer, safe or risky?

hello fellow travelers~

I will be flying from Haneda airport (tokyo) to Naha airport and then fly out to Taipei TPE airport. I have exactly 2hrs of time in between flights. Never been to Naha airport before so wondering if this is doable and what's the difficulty level?

I imagine the arrival should be easy/quick since it's a domestic flight however the departure part might be tricky because it's international flight?

it looks like Naha airport is only one building structure so I assume it's "walking distance" from domestic to international terminal?

any help is appreciated and thanks a bunch!