Om Sai Ram!
Dear Sridevi Ji,
The vrat can be done for 5,9,11,or 21 Guruvars. What I feel is that it's success depends on ur faith, as such there's no hard & fast rules for it. If I talk abt my case even I was doing 9 Guruvar Vrat , on the 9th Guruvar I cud not do the udhyapan hence I extended it for 11 Guruvars. Yesterday was the 11th Guruvar, but unfortunately yesterday too I could not perform the udyapan. I was upset but , you know what, in the evening when I went to temple....I got Baba's blessings...his ways are unique ........that was like an assurance from him that even though I did not perform udyapan he'll still grant my wish.I was so happy!
So my belief says that Baba only needs ur love & devotion ....nothing else. Don't worry....Baba won't mind ur extending the vrat.
These are my views....I would like to know the views of other members on this.
Om Sai Ram!