hi sis,
I think the 28 days is only applicable if ur applying for ILR (Indefinite Leave to Remain) but if u're applying for FLR, u can apply it as long as u've got all the docs needed and apply it before ur visa expires..
In my case, we applied my FLR right after our wedding eventhough my fiancee visa will expire in 4months..Goodluck.
