Assuming you fulfill all the usual criteria and it is the best solution, yes, you can go for another IVA. However, you might have to explain why you need another and how you have got into difficulties again.
My opinions are merely that .. opinions based on experience. Always seek professional advice.
IVA Completed 23rd July 2013 .... C.C. 10th January 2014 http://foggy.blogs.iva.co.uk