Made to feel like frequent nursing is bad

My 2mo has always been a frequent nurser. She usually nurses for anywhere from 20-40 minutes every 1.5-2 hours. She’s also sometimes on the boob nonstop. She’ll nap while nursing but otherwise is an alert and curious baby. Most of the time I think she’s comfort nursing because she’ll let the milk run down my side. She’s gaining weight well so I’m not concerned about that.

She loves to play on the floor between feedings and will listen to music. She’s got a fun personality.

What bothers me is when I talk to family members, mainly my mother about her nursing habits I usually hear something to the nature of, “she needs to learn to soothe without your breast”. She doesn’t like pacifiers and if I take her outside she immediately calms down so we do have other strategies. Today I heard it again because I mentioned that my daughter had to come to my staff meetings with me today and she nursed almost nonstop from 9am-2:30pm. My mom also thinks I need to find a way to keep her more satisfied. (Our pediatrician suggested pumping after I nurse her and give her the pumped milk in a bottle too instead of freezing it. I never ended up doing this because she’s been gaining weight well.) It makes me feel guilty because the feedback I’ve been getting makes me feel like I can’t keep my daughter satisfied or that my milk isn’t good enough for her.