How long will it take to end a false case of murder filled against me

I am from Hindu Brahmin clan i am a resident of Bhadohi U.P, my late wife  who commited sucide on 26'th May 2016 we got married in year 2005,reason of her sucide was, she was mentally disturbed because i was completely bedridden from October 2015 becoz of ankylosing sponylitis,OsteoPorosis & Rhemetoid Arthritis. immediately after the incident my inlaws charged me under above mention sections. I have a 5 yr old son,trail is on since then & 2 witness have turned hostile so far.My question to honourable Lawyers of this association is that when would i be able to walk freely how long will the trail take to give final verdict is there a possibility to end this soon my legal advisor has started extorting more money every time a witness statement is recorded he is charging inappropriately.what do i do i am a sick person pls advice?