I agree with Whale you’ve had the vote and it passed by 3 for 2 against so get your SM to issue special levy to pay for the repairs (it doesn’t matter that 1 has changed their minds as the vote is all that counts).
Don’t wait and give the others a chanced to call an EGM to re-vote the issue because once the levy has been sent out by the SM and the due date has passed the ones that haven’t paid are then non financial so ineligible to vote on any motion until they pay this special levy.
Once the special levy has been received by the Strata it is virtually impossible to get it repaid and so you will find it easier to get the repairs done once the cash is available.