I see that is easy. Here are a couple of ways to disable or reduce the charge current on the phase. When you get an energy meter you can check the current and disable charge if it’s too high or use DVCC to adjust the current lower. Here is a node-red flow that checks the current and if it’s over 10A disables the charger or you can use the one to adjust the current.
Hope this will get you started. The flow is in the text document if you want to try just adjust the parameters as required.
CHECK PHASE CURRENT.txt (4.8 KB)