Getting out of a 12 yr lease in Colorado

[Brett Denner]

Hi, thanks in advance for responding.

I'm currently in month 3 of a 12-month lease and would like to get out of it, however, my lease agreement is extremely short and says nothing regarding how to get out of the lease, only penalties for breaking it. 

I've informed my landlord that I'd like to transfer the lease and am willing to help, he verbally agreed and mentioned he would put up + handle the listing. It's been a month and there is no listing up. I've asked multiple times how it's going and he's said that couple people have applied but all were poor candidates. Not sure how to best deal with this passive-aggressive, lying landlord.

I know that in the case of breaking the lease he is responsible for attempting to re-lease. If I take this one step further, provide a 60 day notice, market the property myself, offer to give up my security deposit and supply him with candidates would that cover my a$$?