https://hashcat.net/forum/thread-6170.html
Lots of modems have keygens, could always look for an available keygen if it has been provided. Otherwise, no changing from a bruteforce to a wordlist for a 12 character password comprised of just lowercase alpha would not increase your attack speed/shorten your attack time.
Quick edit: You can always see if the modem is vulnerable to pixiedust WPS attack as well.
Lots of modems have keygens, could always look for an available keygen if it has been provided. Otherwise, no changing from a bruteforce to a wordlist for a 12 character password comprised of just lowercase alpha would not increase your attack speed/shorten your attack time.
Quick edit: You can always see if the modem is vulnerable to pixiedust WPS attack as well.