well, with that span of time, you should already be checking out some weddings venues and wedding packages from bridal shops. and maybe you have already decided as to whether you're gonna have a ps or not.
I found a checklist under tools which was quite useful too! http://www.perfectweddings.sg/members/checklist/ Since you have a relatively shorter time to plan your wedding, maybe just focus on the big stuff like venue, gowns & suits, and photography