Two same network on different Lan Ports

Hi
I have two NVR (Network Video Recorder.) There are 12 Security cameras attached with 1st nvr and 12 with 2nd nvr. Unfortunately, they both Nvr and security cameras’ IP addresses are on the same network 192.168.2.0. I cant change the ips of nvr or security camera due to security cameras’ password not know. The vendor of nvr is telling a long procedure to reset the password. because there is no reset button on security cameras.Now I want to configure router first port is as Wan. 2nd port is as Lan with network 192.168.2.0 for first nvr and 3rd port is also as Lan with 192.168.2.0. I know the configuration of Mikrotik very well.I am configuring it but only 2nd Lan Port is giving out the internet. 3rd port is not giving out the internet.I have configure DHCP server on Lan ports but Dhcp is also working with First Lan. I cant use both nvr on same Lan Interface.(Nvr not works in that situation)

Please help is it possible that two Lans with the same IP network.
Advance thanks