Transiting to Ishigaki in Naha airport – is 2 hours enough?

Hi everyone. I’ll be travelling from Hong Kong arriving at Naha airport at 10:40 am, then have to make the 12:45 pm flight to Ishigaki. These are two separate bookings so I have to go through immigration in Naha and check in again. I will not have checked bags. Does this sound doable? The trip will be in late October if that matters. Thanks!