@3val4india
You can do sai 9 thursday vrat, if you want. But dont start the vrat with a doubt, Believe in him and do the vrat. Search in net for procedures. I have read many devotees miracle by doing sai vrat. Even i am doing it.
I have tried everything for my life. I chanted a Lord ram mantra for 21 days, read sundara kandam for 30 days, now i am chanting katyani mantra, it need to be done for 48 days. But from my experience once i started to pray to baba, i felt more close to him. I got peace when i say his name and pray to him. I am not seeing any improvement in my life but i believe that he will do something good for me. It all how you believe.
Start doing sai vrat. Baba will not leave his devotees