What are my options for staying in Thailand with an expiring passport and a multiple entry b visa?

Swedish passport holder on a multiple entry b visa.

My current entry is valid until 11 of November ( the actual visa is valid until April 2020).

My passport expires in beginning of April 2020.

This morning I was denied to fly to kuala Lumpur (border bounce to get another 90 days) although I had ticket to BKK the same day and an appointment with my embassy tomorrow morning.

What are my options?

1.Are there any other neighbouring countries that allows entry with less than 6 months less?

2.Would I be able to get a extension at immigration, with a supporting letter from my embassy, until my new passport arrives?

3. Do I need to get an emergency passport in order to be able to do a border bounce?

Thanks for your input.

/ Lotta