The NVC stage is very fast right now. It only took us 45 days to be “Documentarily Qualified”, i.e., ready for an interview appointment. US Embassy Casablanca sends out interview letters only a few weeks after the NVC stage is complete.
After your approval, if you upload all the correct documents to the NVC and become case complete from the first time, you won’t have to wait much. You’re SO close, and so very lucky that your husband is in Morocco and not a country where waiting for an interview date takes a year!
Study the reciprocity documents schedule for the country of issuance of each civil document on nvc.state.gov/find, and start compiling the financial evidence you’ll need for the I-864. Familiarize yourself with the NVC stage before it arrives.