How do i send api post to local even after change ip?

Question

I usually send a POST request from mobile WIFI network to my local server https://192.168.0.23:8000 (gateway is 192.168.0.1) (both are connected to the same network)

Now if i change the gateway IP say from 192.168.0.1 to 192.168.1.1 Sending a POST request to 192.168.0.23:8000 obviously won't work, I need to manually change the POST request to 192.168.1.23:8000

Is there a more efficient way of doing these things? without using the public network. I just want to use local network.