Standby more money... PR will be more expensive then Singaporean... maybe KKH will be a good choice... an use CPF too... they rest of the hospital will be much higher no matter what... unless u don't mind... $7k-10k to be on the safe side...
is advisable to stay in SG by looking at the ⬆️⬆️ cases in Malaysia u can call hospital and check with your gynae for the cost, it will be more accurate for better preparation
hope your situation works out!