Acute Calculus Cholecystocis. A year?

I got my first gall attack in the month of February this year and it was followed by 2 more attacks in march. I curbed my diet and hence didn't get the attack for the next 2 months. Now I got the attack again this month. I went for an ultrasound and it showed that the gall bladder is thickened by 4-6mm and multiple echogenic foci with max size 9.2 mm are present. I went to GMCH And PGI Chandigarh but no one is willing to do a surgical removal quickly. I am about to join my first job as a management trainee in sales and marketing from 2nd july. I am worried this would impact my performance and it would be difficult for me to maintain a diet as this Job typically involves lot of travel. Please suggest whether to go for the surgery right now or I can delay this for a year?