The value of the allotment issued to any eligible household for the initial month or other initial period for which an allotment is issued shall have a value which bears the same ratio to the value of the allotment for a full month or other initial period for which the allotment is issued as the number of days (from the date of application) remaining in the month or other initial period for which the allotment is issued bears to the total number of days in the month or other initial period for which the allotment is issued, except that no allotment may be issued to a household for the initial month or period if the value of the allotment which such household would otherwise be eligible to receive under this subsection is less than $10. Households shall receive full months’ allotments for all months within a certification period, except as provided in the first sentence of this paragraph with respect to an initial month.