https://va.ecitizen.gov.sg/cfp/customerPages/moe/explorefaq.aspx?Category=3645&utm_source=moe-corp-site&utm_medium=referral&_ga=2.108075905.247193050.1553228073-236746227.1543325764

Parents who move to a residence that is within the same home-school distance category as the declared address used for registration, can continue to fulfil the 30 months stay condition based on the new address.