clause (iii) for a period whose length is specified in clause (iv). (ii) Clause (i) shall not apply with respect to the period of an individual as a primary provider of personal care services if the period concludes with the revocation of the individual's designation as such a primary provider under section 1720G(a)(7)(D) of this title. (iii) The date specified in this clause for the beginning of the use of benefits by a child under clause (i) is the later of— (I) the date on which the child ceases acting as the primary provider of personal care services for the veteran or member concerned as described in clause (i)