Local media reports quoted the IAA as saying they hoped the ILS would be fully restored later this week. I' m not sure what's so significant about September. What can be done next month that couldn't be done this month?
I would also question the wisdom of decommissioning the CAT 2 during the Summer months in future. The low cloud that brings the RVR below CAT 1 is as likely to arrive in August as in February. At least if disruption occurs in the Winter it can be more easily managed by airlines, bus companies etc.