Stuck in commercial lease with 2 years left - went fully remote, can I break it?

I'm in a tough spot. Signed a 5-year commercial lease for office space in Denver back in 2023 (3200 sq ft, $6800/month). At the time we had 8 employees and were growing.

Fast forward to now - we're down to 5 employees, all working remotely, and we haven't used the office in over 6 months. Paying $81K/year for empty space is killing us. We still have 2 years left on the lease.

I talked to the landlord about early termination and he basically said "not my problem, you signed a contract." The lease has no early termination clause. What are my actual options here? Can I just stop paying and walk away? Find a sublease tenant? I'm desperate.

Quick update: Sent the landlord an email proposing a $27K buyout (4 months rent) to terminate in 90 days. Also offered to maintain the space and help with showing it to new tenants.

He responded pretty quickly - rejected the buyout but said he's open to me finding a sublease tenant OR he'd consider a higher buyout number. Asked me to submit a formal proposal with financials showing my company's situation.

Progress at least. Going to simultaneously list the space and counter with a $35K buyout offer.