For registration of your marriage he has to cooperate unless you cannot get your marriage registered in India.
Until your marriage is not registered under special marriage act or foreign marriage act, it can still not be considered as a legally valid marriage.
If you have got married to this spouse in the year 2022, then how come you have two adult children, it means you were married earlier and that marriage was dissolved by a court decree?
ELIGIBILITY CRITERIA (for registering the marriage in India):
At least one of the parties should be an Indian citizen.
The bride groom must be 21 years of age; the bride must be 18 years of age.
Neither party has a spouse living,
N.O.C. or Marital Status certificate from the concerned embassy or Consulate in India by a foreigner partner.
Death certificate or divorce decree whichever is applicable, in case one of the parties
had any marriages in the past.
Thus please be aware that it is not an easy process to get your marriage registered especially
if he is not cooperating