saw this while googling

1and1.com Subdomain Propagation

I changed the subdomain IP's of my nameservers because I moved out to another VPS. It's been over 72 hrs and the new IP's have not propagated yet.
so does this mean it will take more than that? or should i just change the nameserver at 1and1 to my nameservers registered with namecheap? will it also take that long? anyone have experience with 1and1 please reply