Gas gauge problems

So basically I currently own a 2008 Toyota Prius. Whenever I add fuel I typically only put in $5-$10 dollars at a time and the gas gauge still shows that I need to add in fuel.

I have already read on here that because of the type of fuel tank they added in these cars, you usually have to put in at least 4 gallons at once in order for the gauge to go up. Because of this, I'm wondering if it's possible to switch out the tank with a typical one so the gauge will actually notice what I put in.

If so, does anyone know of one that would be compatible with a Prius and the cost of the part? I have a family member that is a certified mechanic that will do the work for me. I just need to know if there is any steps I need to take before doing so and the cost of the replacement tank.

I am located in Ohio if that adds any insight. Thank you in advance for any help!