Yes. You do not need to do it within 60 days of receiving the RMD. The rollover needs to be completed within 60 days of receiving a distribution other than a RMD, or it can be done as a trustee-to-trustee rollover.
The IRS says in this document:
If a surviving spouse receives a distribution from his or her deceased spouse's IRA, it can be rolled over into an IRA of the surviving spouse within the 60-day time limit, as long as the distribution is not a required distribution, even if the surviving spouse is not the sole beneficiary of his or her deceased spouse's IRA.