It is issue of dispute, but I go with the following opinion:
One sacrifice is sufficient for udhya and aqiqa, and you can combine your
intention.
Kindly refer to the following link(s):
https://islamqa.info/en/106630

Am confused Shaykh in one reply you said that u feel udhiya and aqeeqa should be done spearately. And in other reply u said one can combine the intention of udhiya n aqeeqa. Please clarify my doubt as brother is gonna offer udhiya can he combine intention of aqeeqa as he had done his own aqeeqa by offering only one goat due to financial problem. Now can he combine intentions