Switching from 10 year route to 5 year route

[Azim2020]

Please I'm having an issue completing this section of the application form. I'm spouse visa 10 year route but want to switch to 5 year route as I meet all the requirements.

5. Is this the first time you have applied for a partner route, or an extension, with your current partner (including as a fiancé(e) or proposed civil partner)?

Do i want to select No?

I am not 100% sure on this and would be great if someone else could maybe answer. But so far I have put No, because my current visa on spouse visa.

6. Please choose the reason you are applying for an extension, this includes if you are switching to a partner visa from another type. (Required)

-First extension as a partner (following an initial period of entry as a partner, or as a fiancé(e) or proposed civil partner of a settled person)
-Additional extension as a partner
-First application as a partner from within the UK (for example, you are currently in the UK on another type of visa or permission to stay)
-You delayed your travel to the UK by more than 3 months after the issue of a visa and have not yet completed the required amount of time on a partner visa (not including as a fiancé(e) or proposed civil partner)
-You require more time to meet the Knowledge of Language and Life in the UK requirements to apply for settlement
-You were granted entry as a fiancé(e) or proposed civil partner, but have not yet married or entered into a civil partnership
-You are applying for any other reason

I am confused but have chosen I'm applying for any other reason then I explained that I want to switch from 10 to 5 year route.
Please have I done it correctly?

[vinny]

I think
5, No.
6. Additional extension as a partner.