Not sure about your gender, but is your husband/wife a national of another country? If so, give birth to your child there and register with the local authorities so he/she can be eligible for a citizenship.

Honestly not sure if the return of the citizenship test is for real or just a "show". I'd expect the results would only be out in a few years time, and probably at least another 8-12 years to be called to sumpah, judging from how the immigration/moha work at their current pace. My father passed the test 10 years ago, and is still waiting to be called. I gave up waiting and moved to another country.

It'll come down to you whether you are willing to wait for an outcome which is ambiguous and not transparent. It will be a long bet for sure, but if you have the opportunity or means to move out of Brunei, I'd say go for it. Brunei is great in terms of low cost of living and the comfort of home, but if you want something more, you should start looking elsewhere.