Prioritize cellular data over Wi-Fi

Is there a way to set the phone to prefer cellular data over Wi-Fi so that it will use cellular if it's good but Wi-Fi if cellular is not? Similar to the "Switch to mobile data" setting but in reverse? The intent here is while using internet as a passenger in a car and driving through areas where coverage isn't great, I bought a cheap prepaid hotspot from another carrier (that's providing the "Wi-Fi" referenced here), but I want my primary cellular plan on my phone to be used first rather than that. Right now I manually switch between the two, but there are areas where which one is better changes quite frequently, so it'd be nice if this could happen automatically.