Hi vikki and a warm welcome to the forum
I agree with you that your best option is now bankruptcy proceedings given your change of circumstnances.
You will need to discuss the implications of this with your IVA Supervisor, but I suspect that they will not have collected enough money to petition for your bankruptcy directly, and is you are up to date with your payments they would also have no grounds until you had missed at least three payments.
I suggest that you save up the £490 which is needed to pay for the bankruptcy application, by ceasing to make your IVA payments now, and then petitioning in a couple of months time.
Do keep your Supervisor in the loop with this, as there is nothing worse for an IP than to discover a client has made themselves bankrupt without your prior knowledge.
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