No. Once your son becomes a USC and provided that he is 21 or older at that time, you would then be eligible to adjust based assuming you are otherwise admissible.
The answer provided is general in nature and should not be construed as legal advice as not all facts are know by the attorney, nor does the answering of this question create an attorney client relationship.
A permanent resident child can not provide any immigration benefit to the parents. He must first become naturalized after he is 21 years of age and then file a relative petition for you to be able to adjust your status to permanent resident.