Agree with Peter. You have two years in which to claim for “non-major” defects which can be very substantial but fall short of meaning the building or part of it isn’t fit for occupation. Call a meeting, get a defects survey done and make your claim.
Forget friendships and other relationships. A responsible and honest developer should be urging you to do this, rather than letting the clock run out so that their repair bill is reduced by 70 percent (with you and your other neighbours picking up the slack).
By the way, the developer has no special powers after the first AGM of the owners corp. They can use their votes like any other owners but their roles, as owners and developers, are quite separate.
If the developer has hi-jacked the committee, get enough signatures (in your case, probably two owners as long as their unit entitlements add up to a quarter of the total) to call an Extraordinary General Meeting to get this moving.
Remember the owners (in general meeting) are the bosses of the executive committee, not the other way round.