ILR Long Residence Application - Queries for Family

I have been granted ILR under the Long Residence category on November 22nd 2025. My family (wife and three children) will complete their 10 years of residence on July 5th 2025 and will be eligible for ILR on June 8th. I have the following queries regarding the application process:
1. Application Submission Timing:
Can I submit my family’s application now (on May 21st or 22nd), and book a biometric appointment for June 8th? Would it be possible to attend the biometric appointment on June 8th or 10th, depending on availability?
2. Application for Dependents:
Can I include my children on my wife’s application, or do I need to submit separate applications for each of my family members? Essentially, do I need to apply for 4 separate applications (wife and 3 children)?
3. Documents for Children:
Regarding the documentation for my children, I understand that I need to provide correspondence for the last two years. I have a bank statement, but the account was only opened 6 months ago, so it only covers 6 months. What alternative documents can I provide to cover the remaining period?
Any advice or guidance on the above questions would be greatly appreciated.

1. Why not just wait till the 8th June, it is not that far away.

2. You cannot add dependents on the long residence form each applicant must apply I dividually and meet all the requirments individually.

3. Where does it say you need 2 years documents for long residence ILR???

3. Where does it say you need 2 years documents for long residence ILR???

Thanks for your swift response. Last year, when I applied for ILR I received this below statement in the documents sections.
" and correspondence
addressed either to you jointly, or in both of
your names, or addressed individually to you at
the same address, to cover the last two years"

Cohabitation documents are NOT relevant for ILR under the long residence. Again, under the long residence you apply on your own and must qualify on your own