Moving from WIFI to Mobile Hotspot Connection issues

Hi Experts.

Hopefully another simple sollution.

Got an arduino Nano connected to my laptop at home, Using my wifi. System works perfect.

I wanted to use it using my phone as a hotspot rather than my home wifi, to give the laptop internet, but wouldnt work, Im assuming that i need to change the IP address somewhere, but im not sure how to do it , or resolve the problem.

Any help gratefully received, I did lok around other threads but didnt really see the answer.