With regards to the employment letter from the previous employer, should i obtain the letter now or should i wait until september close to the application date, ie, does the date of the employment letter make any difference?

Thank you so much for your response. Just to be clear do I need to get all my payslips stamped by previous employer as well?

I am applying for FLR spouse visa for my wife. I have some questions if someone could kindly help I would really appreciate. Her uk arrival date is 1st March 2018 so that her 30 months will be 1st Sept 2020. On her BRP her visa expires 21st Oct 2020. Question : I can apply for FLR 28 days from what ...