Chevy Equinox 36/12 low mileage user end of lease options

I’m 24 mths into my 36/12 lease. Have only driven under 9000 miles so far in 2 yrs. Would GM amend the lease (to reduce the monthly payment) for lower mileage or give any kind of low mileage rebate? What is my best end of lease option with such low mileage? I’m thinking about end of lease purchase next August; or whatever makes financial sense to take advantage of the low mileage. I probably won’t go beyond 12k miles in 3 years at this rate. Thanks.

No rebates for not using all your mileage.