so when the time to be called up on april then mine is pushed back until Oct?
No, what I meant is that you may be temp Pes C1L3 for the first 6 months of your NS. Enlistment time still same &, if I'm correct, you're also get to skip some activities during BMT. But you'll go for vocational training after that, let's say, as a storeman. I was wondering if the SAF will re-course a "small fly" like you if your Pes status is upgraded. But if you kena, say, driver, you won't have to at all.
If I'm correct with my guess, then I suppose you should've asked what medical condition they found out during the checkup. Can still do this during the next review. Or maybe your MO can provide some details during course-time or at the unit itself.