Well... in your first photos, all three are together! Even if they were in separate enclosures, you exposed all of them when you held them together. Quarantine actually means keeping completely separate, no exposure. It is actually really important. I even suggest keeping them in separate rooms of the house as well. Also using new gloves with each enclosure and washing hands in between. You can't put the frogs together, on your hand, and actually say they were quarantined. Just FYI...