Is it possible to downgrade to subsidised from private at kkh? Currently 35 weeks

I was a private patient at mount A, but due to pregnancy complication, my gynae ask me to go public hosp because I need to be warded 2 weeks ans induce (I was wk34 then). I warded in to sgh thru a&e and went in as a subsided patient. I am not sure whether it’s because I am a emergency case that ward in thru A&E, hence I’m able to get subsided rate . maybe you can just check directly with hospital.