Sounds like you are in a 60 month Plan because you were over median income when you filed. If your "commitment period" is 60 months, it is highly unlikely that you can get out in less time unless you pay 100% of all allowed claims.
If your Order Confirming requires the turnover of the tax refunds and you need to divert them for some necessity contact your Trustee to see if you can work something out - better yet, discuss this with your attorney if you have one.
Des.

