2 ESP8266 will not solve your problem, except you put a totally different binary on it that does ignore the Wifi... or you disable the Wifi (switch it off)... but it still will use you memory resources. Best is to get yourself a Pico.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
2 ESP8266 will not solve your problem, except you put a totally different binary on it that does ignore the Wifi... or you disable the Wifi (switch it off)... but it still will use you memory resources. Best is to get yourself a Pico.