In any case where—
the effect of the notice or request shall be to terminate the tenancy at the expiration of the said period of three months and not at any other time.
The reference in paragraph (c) of subsection (1) of this section to the date on which an application is finally disposed of shall be construed as a reference to the earliest date by which the proceedings on the application (including any proceedings on or in consequence of an appeal) have been determined and any time for appealing or further appealing has expired, except that if the application is withdrawn or any appeal is abandoned the reference shall be construed as a reference to the date of the withdrawal or abandonment.