Is the aqiqah for twin girls due now, or after their discharge from the incubator?

The Sunnah (definition) is to slaughter the Aqiqah (definition) on the seventh day of the newborn's birth. If that is not possible, then on the fourteenth, or otherwise on the twenty-first, based on what Al-Bayhaqi narrated from Buraydah that the Prophet, peace and blessings be upon him, said: "The Aqiqah is slaughtered on the seventh, or on the fourteenth, or on the twenty-first." It is permissible for you to perform the Aqiqah for both of them at any time it becomes easy for you, if you were unable to do so at the preferred times. However, taking the initiative to do it when possible is better.