Is it normal that his mother want me to treat him as a kid who is not independent at 29yrs old? what do think?

When he need to go to the dentist, my boyfriend mother want me to make the call for him, as her and her sister always do it for him. For me I think at 29yrs old we can do it ourselves. When he was sick once his mom prepared a soup but it didn't like it didn't want to eat. So I prepared some cheese toast and roasted eggs for him because I know he likes it and would eat it. Eventually he did. Then when his mom asked what he had eaten, like she criticized what he had eaten the day like this is ad for him, will make him sick but he was only things he wanted to eat. And then after that she tried to copy me the food I gave him... but when she is the one telling him to eat toast with cheese then the food is good for health. But when it is me who gives him it is bad. What do you think? What should I do? Is it normal for me to talk to dentist for boyfriend? and his mom tell me like I must do it. Is it normal the way she acts? what must be done?
Is it normal that his mother want me to treat him as a kid who is not independent at 29yrs old? what do think?
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