This just seems to be the neverending story doesn't it! I cannot advise you to withdraw your case, neither can I advise you to stick with this any longer. It seems to be taking forever, and your case is not complex. If you feel that you are not getting good service from your IP, then it might be time to change - as you have to stay with the same firm for the next five years, and at least know that you are going to be looked after during that period
Another IP could probably put the proposal together for you relatively quickly, but you will need to ask for all of your paperwork to be returned so that they can do their work properly.
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