Hi pjk and welcome to the forum
Firstly, how were the contributions you paid to the IP pre-IVA recorded in the IVA documents? Hopefully as a payment on account of the Nominee's fee?
If you feel that the IVA is no longer a sensible option for you, you ought to discuss a reduction in payments with your Supervisor firstly to a level you can afford. Why were your payments increased in Year 2? Your IP may be able to recommend a variation in the IVA terms to your creditors, but this can only be done by calling a new meeting of creditors.
Even though your daughter is poorly paid, she ought to be contributing something towards the household bills.
If bankruptcy seems to be a better option for you now, do discuss the implications of this with your IP before proceeding, and be aware that the Court costs are now £485 which need to be paid in cash at Court on the day of your hearing.
Regards, Melanie Giles, Insolvency Practitioner for over 20 years.
For further details contact me at
http://www.melaniegiles.com and view my IVA blog at:
http://melaniegiles.blogs.iva.co.uk