The solution is it to make several LAN interface or to use firewall zones ? I do a test, but I lost my OpenWRT and I had to reset it to recovered my access.
First of all you cannot have one interface in 192.168.1.0/24 and the others in subnets of the /24
You definitely need to create 4 or 5 interfaces. The last one can be 192.168.1.208/28 or 192.168.1.224/27
The zones that you'll create depends mostly on how you want to regulate the traffic among the interfaces. If for example 2 interfaces can have the same forwardings to other zones, they can belong to the same zone.