Ok so about to apply for my wife's ILR (5 years of stress is almost over!)

So my question is, do I need a letter from both employers detailing my employment length (start and end dates), type of contract and gross annual salary?

For context, I worked for my previous employer from March 2023- March2024 and have been working for my current employer since March 2024. I left the first job on a Friday and started at the new place the following Monday so I haven't missed any payslips.

i won't have enough payslips by the time we need to submit the application for Cat A which is why I'm having to apply under Cat B.

Is there anything else I need to know?