Colonoscopy and Probiotics

I am scheduled for a colonoscopy Dec 31st. I want to start taking a probiotic because I just finished taking an antibiotic for SIBO. If I start taking it now would the colonoscopy negate any gains I would have made in building up the good bacteria from taking the probiotic? Should I wait until after I get the colonoscopy? A medical personnel at the manufacturer of the probation VSL #3 said to wait. I have no idea what his credentials are. My GI doctor said to take it now and that the colonoscopy would not interfere with it. What should I do?

My daughter takes VSL 3, I would take the probiotic for sure.