The majority of scholars hold that aqiqah is a confirmed sunnah (sunnah mu'akkadah) rather than an obligation, though some, like the Hanbalis, considered it strongly recommended to the point of near-obligation for one who can afford it. The Prophet (peace be upon him) said, "With a boy there is an aqiqah, so shed blood for him and remove the harm from him," and the Sunnah is to slaughter two sheep for a boy and one for a girl, on the seventh day, when the child is also named and the head shaved. If it cannot be done on the seventh day, scholars permit it whenever one is able thereafter.
Informational, not a personal fatwa. Consult a qualified scholar for rulings on your situation.