Quarantine...

so i got my new babies from a local petshop, i know the owner, and it is him who breeds them, i have seen his birds and the only illness he sometimes gets is sinusitis...(a type of cold)
now the two babies i have are clear for sinusitis... they are healthy little babies...
can i cut my quarantine short, being that i know the health history of these birds?...
i have to move soon, so it will make things easier if theyre not, but isnt impossible to keep quarantined....