Hi Andrea
I suggest that you call the IP personally and have a chat about your circumstances. He/she cannot change the goalposts without a formal resolution from creditors which, as Neverending rightly points out, must also need your agreement. So the extension of 12 months cannot occur without the agreement of all parties.
At the end of the day you will put your family before the creditors any day, but I would try and encourage your son to get back to work as soon as he can. Is he receiving any state benefits? And ensure that you submit a statement of income and expenditure to the IP in writing - I always send out a standard form to my clients which gives them last year's figures and a blank column to complete with current costs. Additional expenditure must be taken into account, before seeking any increase in payments.
Good luck with the review
Regards, Melanie Giles, Insolvency Practitioner for over 20 years.
View my IVA blog at:
http://melaniegiles.blogs.iva.co.uk