UK entry date for IRL

I am awaiting my Global Talent (Promise) visa. I put August 1 as my date of entry. However, I probably won’t move until mid-October.

My understanding is that my visa will be good from August 1, 2024 until August 1, 2029. But I won’t reach the necessary 5 years needed for ILR until October of 2029.

Does this mean that to apply for ILR, I would need to first apply for an extension of my talent visa? Or would I be able to apply for the IRL with only 4 years and 10 months of residency?

You can apply for ILR by July or August of 2029.