As per your post the divorce has been granted last year.
Last year 2017 was about 33days back also, as last year ended on 31-12-2017.
What is he hurry to remarry?
One has to wait till the period of appeals has expired.
The marriage is annulled or divorce has been granted?
What is the opinion of your own counsel that has represented you in court on remarriage and maintenance or alimony on grounds on which divorce was granted by court and also circumstances under which wedlock was ended?
You have also not clarified the demand is verbal or in court of law?