An offer in compromise will stop tax levies under section 301.7122(g)(1) of the US Federal Tax Regulations. That regulation states that the IRS will not levy upon a taxpayer's property while a valid offer in compromise (an offer that has been accepted for processing) is pending and, if rejected, for thirty days after the rejection. If the taxpayer appeals the rejection, the IRS cannot levy while the appeals process is ongoing. If a levy is in place when the offer is submitted, it is not automatically released.
There are two options available to you if the IRS refuses to accept your OIC. You can submit your offer again. A new Form 656 is not required unless you receive the first offer within a month.
You can communicate with the IRS via a trusted tax relief advocate. However, regardless of how many steps you take to resolve your tax issues, no matter how much you try, it will never be completely resolved. While you're making the right steps by opening a conversation with the IRS about your tax issues, it is possible that you will not completely resolve them. This is your chance to revitalize your life and start over. Show that you are serious and take the matter seriously. They expect you will be consistent as they give you a lot of flexibility. While you are working on your agreement, it is important that you keep up with your payments and maintain compliance. The outcome of the Fresh Start decision will affect the timeline.