Is it possible to file a case of maintenance without a divorce?

Assalam Alaikum,

I am French and have 4 children, and I am 3 months pregnant.

I reside in the UAE and my husband clearly stated that he is leaving for Turkey because life is less expensive than the UAE and that I will have to pay all the bills here by myself and take care of the kids as I am working here.

What can I do? What about when the baby will be born?

All my children are under my residency (iqama) Alhamdulillah but will I be able to add my baby under my iqama knowing that the father abandoned us and we are not legally divorced?

Jazakum Allahu Khairan for your answer.