«This includes a temporary decree, an interlocutory (not final) decree, and a decree of alimony pendente lite (while awaiting action on the final decree or agreement).» (money.stackexchange.com)
You or your attorney can file a motion for pendente lite relief, asking for this. (info.legalzoom.com)
This period, known as pendente lite (pending the litigation), can sometimes last for months or even years, although it is invariably much shorter during mediation than through traditional litigation. (alexandermediation.com)