Tier 4 switching to tier 4 dependent

My tier 4 visa was expired in dec 2014 after that i applied for flr(o) which was refused in March but home office gave me right of appeal at the moment i am in appeal and waiting for hearing date, my wife is tier 4 student in University and doing level 7 course and course is for 2 years, my question is can i switch to become her dependent with in the uk? And i heard of that we need to apply at the same time but wife already had a visa so how do i apply at a same time too confusing.
Can anyone please help

Please stop posting Multiple Posting(Click) and continue in your Existing Topic

I am sure someone who can answer your query will be online at a point to advise.