bro for me i everything did it in the same day because i already got my Australian passport and the renounciation form i already filled them up.
had to go to ica 6th floor and that day it seem that i and my dear wife the only 2 renounce our singapore citisenship that was 2014. and must angkat sumpah! we had to raise our right hand and sumpah we are not forced by others to renounced and the lady officer poke 2 hole on our singapore passport and cut our pink nric.
she gave us a letter stated we already renounce our citisenship and immedietly we went to cpf branch the ooficer there softly ask us how is the life in Australia and i told him very good that why we renounce our singapore citisenship
well after 2 months they credit our cpf into our posb account
and we bought our 1st house bro