The IB is unaffiliated with the procedures and deadlines given for the EE by your school. They only need a complete, 4,000 word essay handed in through IBIS usually by February/March that they can grade and are not responsible for your school failing to have provided proper feedback on your first drafts. Every school has their own EE first draft/feedback/final draft deadlines that they deem fit. Some schools even require to have your final version ready by the end of summer vacation.
To resolve this issue, you and your peers have to email/talk to your DP Coordinator.