What should I do?

[Slyguy00]

So about a month ago I had an ich outbreak, and lost my 2 clowns, my mandarin goby and my lieutenant tang. I thought my sail fin tang was done to, and as of today he doesn't have a spec or a mark on him. I also have a convict tang that never even showed signs of ich at all. So now a month later my convict and sail fin look perfectly happy and healthy. So that leads me to my question. I know that if you have ich you have to run fallow for 3 months before adding any new fish, but since 2 of my fish survived and are now fine am I able to add more fish? or do I wait 3 months with the fish I currently have in my tank? Any advice would be appreciated. Thanks in advance