I had 3 routers connected with one layer 2 switch in same vlan. Each router is configured with the loopback addresses like 22.214.171.124, 126.96.36.199 and 188.8.131.52. so as per the DR and BDR selectiong 184.108.40.206 should be the DR and 220.127.116.11 should be the BDR. but when i issue the show ip ospf neighbor command then its indicating the 18.104.22.168 as DR and 22.214.171.124 as BDR and all the router had same priority field.
Once the election is done and DR and BDR already elected the only option available to other routers to become DR/BDR is when existing DR/BDR go down.
So in your situation afaik the only option is to reload the router with having adress 126.96.36.199 and 188.8.131.52 and then 184.108.40.206 router will take the role of DR.
NOTE: If this is live network do not follow my suggestion of reload without arranging downtime or as per your company network requirements.
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