If you have trouble making your regularly scheduled federal student loan payments then there are options you should consider.
Deferment is a temporary measure that stops your required payments on your federal student loans. One benefit of deferment is that the accumulation of interest on subsidized loans stops. However, Interest still does accrue on unsubsidized and PLUS loans.
Some of the most common reasons that a deferment is granted include unemployment, lack of full time employment, economic hardship, and certain military/National Guard involvement. Your loan servicer will be able to evaluate your specific situation and determine if you qualify for deferment.
Contact your loan servicer to see if they will grant you a deferment.