I was quite late in applying for IFC for my child. I did it few weeks after birth. Applied through ECDA no respond and waiting time was long. Instead I applied through individual schools direct website. Gotten a slot a week or two. But had to await for atleast 6 months later due to the availability that was limited. I was okay with it. So I will say depends on luck. I know some would apply 3 to 6 months later. Idk but it is just the waiting game for some. And there are people that would call every few weeks esp if they are on waitlist.
Koh Hui Ling