Confused by IBCLC diet advice

mrs.gee

I met with a highly-recommended IBCLC yesterday to just touch base on my 8w-old breastfeeding relationship and plan for my return to work. She felt my son is very gassy and recommended cutting dairy from my diet. She also said I should cut beans, salad greens, tomatoes and peanuts (among some other stuff) because these can also cause gas. I've read plenty about dairy sensitivity, but everything I have read about other foods causing gas seems to say this is an OWT. Granted, DS had a horrible night of gas the day i ate a huge spinach salad with beans for lunch, so I'm tempted to believe her. Has anyone else received this advice? I'm left with a very limited carb-filled diet which is not conducive to fitting into my work clothes in a few weeks!