Hi kandh (by the way Kerri is the Welsh way of spelling your names!)
Your IP will need to know the identity of the provider of funds, and have confirmation that the funds are readily available. Ask them initially to provide you with a settlement figure, for you to consider, and it may be worth confirming that you only have £12,000 available now, but if you are able to achieve the original dividend with an additional four months payments, then base the variation on that but you don't need to wait until those four months have passed. In reality it will probably take that long from start to finish in any case.
Good luck, and don't forget to tell your husband to tell his IP that this is a loan rather than a gift, and is therefore repayable my using the £460 per month his is currently paying.
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