They should be fine if they are in a "greenhouse" effect spot..do not let any direct,or reflected sunlight hit them at all,,you don't want them to actually try to grow yet at 3 days old,,they need to worry about roots right now,,,that's why...
If you can maintain a humidity over 65% ,,you should be fine...be carefull not to worry so much as to overwater...
hope all goes well....(hide the dog..lol)..
