Yes Enquiry on Result (Remarking of IELTS result) really works if you are sure of your expected performance.
I wrote IELTS on 23 March 2019. The result was LRWS 8.5, 7.5, 6.5, 7.5
I applied for EOR for the Writing component, on the 8 April.
The EOR feedback was sent to my email on 18 April...