There are so many variables, however, all is not lost.
If you anticipate a job or anything that will help you through these tough times (family contribution), you can amend the plan. If you believe the situation is temporary but you truly have no idea when the next income source will come in, then you can evaluate dismissing the instant case and re-file when you anticipate earnings to be more optimistic.
In the latter situation, if it is a Chapter 13 to save a home or car, be careful of deadlines and make sure you time the dismissal and re-filing in enough time to ensure the automatic stay preserves your right to the property.
Best thing ---speak to an attorney to appropriately guide you through the variables...but certainly all is not lost! Chapter 13 i out there for the Debtors who merely hit a bump in the road.