Can i appeal for HDB loan without moving house?

Currently i'm using Standard Chartered Bank for my housing loan but the interest is unbarably high from 3++% increase until 5.3%. I really cannot afford so i did ask the HDB. But the person there say I'm not able to switch to HBD loan unless i move house. Have anyone been in this case before? If yes, please kindly advise. Thank you.

Answers:
i don't think so.

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