There is absolutely no need at all for you to propose an IVA if you only owe £3,900 to your creditors and are making the payments properly. What bizarre advice - and I think your creditors would think you had gone made if you did!
It may well be a good idea for your partner, and he should seek specific advice from an insolvency practitioner or debt management company in this regard. There is no such thing as a joint IVA - the "i" stands for individual - so you definately do not want to be involved in this plan.
I have never heard of that Debt Management Company.
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