You should be able to take weekends off starting from your 3rd
week in NS. However, this may vary for different Uniformed Services
and it's best to check with your officer.
As an NSF, you are eligible for 14 days of vacation leave per
year.
You can take medical leave if it is authorised by your unit’s
Medical Officer (MO) / Dental Officer (DO), a government doctor or
a registered private practitioner. Don’t forget to get your medical
certificate (MC), without it you cannot get the medical leave
approved.
Your Commanding Officer (CO) can grant up to 3 days of
compassionate leave per year (without having to expend your annual
vacation leave) for the following circumstances:
As an NSF, you may be granted full pay unrecorded leave if you
are selected to represent Singapore in a major regional or
international sporting event.