You are going to have to get the support of your dad or brother to look at the person and say, ask "....Messybun" she is the person doing the care" she is the person that knows about that... etc........ Just curious, how old are you? I am in my later 60's.... and still do not get the respect that my son will get... until he will say, hey mom, what is your opinion? He's in his late 40's.... you are going to have to accept that there is a "guy thing" and they think that they know better, more, and are the authority. And men are supposed to know things.....
The other thing is you will just have to say to one or more when they ask your opinion, or something .... just say, "why ask me, you aren't going to listen to me anyway"..... shake them up a bit.
Or say, I don't know, I only do the work.....
But it is what it is. MAKE SURE that any opinion, advise, or information you do express is 100% correct. Sooner or later some will come to respect you.... many men won't regardless. Bite your tongue, and fly under the radar, and grow a thicker skin.