Miri Northern Sarawak

Ok so we took the bus from Sarikei - there was a stretch of 200 km from Sibu to Bintulu with no hotels which we couldn't cycle and an outbreak of Dengue Fever in Sibu so we decided to skip that too. Only 250 km ish. Cycled on from there via 3 National Parks and another 236 km to Miri. Now we have to be in Kota Kinabalu in Sabah in 3 days and have to cross Brunei. Gonna have to get a bus or fly, or miss our flight out.