Hi CazzaLaRouge
They usually offer a two-week extension each time people ask. When PIP started, it was common for claimants to ask for one extension, and then we started to hear about people asking for a second extension, which was granted. Although I have known people to have three or more extensions, that is not common, and no one should rely on one being granted. So I can't answer your question. These things are usually down to personal circumstances, and a certain amount of luck around the particular call handler, and their willingness to ask a more senior person if another extension could be granted.
BIS
Nothing on this board constitutes legal advice - always consult a professional about specific problems