You shouldn’t need to change your nameservers here. The only thing you ought to be changing is your A/AAAA records for the craftbeer.com and new.craftbeer.com names.
Right now they are:
craftbeer.com IN A 20.80.1.157
; new.craftbeer.com not found
You need to go to your name server control panel (you’re using ns1.domaindiscover.com. and ns2.domaindiscover.com. — seems to be https://www.tierra.net?) and add A records for new.craftbeer.com pointing at the new server IP.