Lease Question

“Renewal, Amendment, or Non-Renewal: When offered, the Landlord shall give the Tenant written notice of the offer of a new Lease, Lease Amendment and/or revision, at least sixty (60) days before the proposed commencement date of the new Lease, Lease Amendment or revision term. The offer may specify a reasonable time limit for acceptance by the Tenant. The Owner and Tenant may execute the proposed new Lease, Lease Amendment or revision for a term beginning at any time after the Initial term or any Successive term of this Lease. 4 The Tenant or the Landlord may terminate the Lease without cause by providing sixty (60)days written notice before the end of the Initial Term, or before the end of any Successive Term of the Lease. (The provisions of this Paragraph are not intended to limit any right of the either party to terminate the Lease where so provided elsewhere in the Lease.)”

Based on this clause if we are breaking the lease with 60 day written notice, does it need to be a mutual agreement? And are we responsible for the remaining months of rent?