Hi Pbryan and welcome to the forum
Your IP is supervising the arrangement that you agreed to make. If you have a problem in making the payments, this should have been discussed with the Ip at the time of the review. It may be possible to reduce your payments, but this can only usually be done with the agreement of your creditors at a newly convened creditors meeting, and also if you are thinking of selling your house this will also need further discussion.
I suggest that you call your IP today to get the ball rolling.
Regards, Melanie Giles, Insolvency Practitioner for over 20 years.
To have me propose an IVA for you, please visit:
http://www.melaniegiles.com/ivaEnquiry.asp
See customer feedback at:
http://www.iva.com/iva_companies/IVA_Advice_Bureau.asp