Downgrading Fibre

[#1]

Hello,
What is the best way to downgrade my existing fibre connection? We originally signed up through top cashback for the 76/19.5 connection but our line can only handle 40/6
40/6 is great but I would like to downgrade to the 38/19.5 connection to save a few pennies, My members center says the following when I try to switch but will not give me the option to change...

Quote

THIS IS YOUR CURRENT BROADBAND PACKAGE Unlimited Fibre Extra£19.99 per month Unlimited Usage Allowance 48.1Mb download speed (estimated) 12.6Mb upload speed (estimated) You've 12 months left of your 18 contract Designed for demanding users

What is the best course of action...

[#2]

As you're in month 12, of an 18 month contract, you won't be able to downgrade.

[#3]

Your best bet is to call Customer Options and see what they will offer - it will require a new contract
    0800 013 2632
    0330 123 9197
    8am - 8pm Monday to Friday
    9am - 7pm Saturday
    9am - 6pm Sunday

[#4]

Being in contract was what I thought I will give them a ring and see what can be done, Thank you very much.