It's not my cup of tea but it's certainly not idiotic. If it's what turns you on so go for it and have fun!

Get your mouth in position first so you don't squirt it in your eye.

 
Be prepared for the sweetest taste you've ever tasted, literally.

 
Nothing idiotic about it.   I love it and many gals love to offer it when they can.    It appeals to their maternal side.

I’d say go for it.

If it seems hot to you, you’ll probably enjoy it. If it turns out to be a cool fantasy that falls flat IRL, then you don’t have to do it again.  

 
Yes your fantasy image is realistic. Years ago in a strip club in Wisconsin I got a private dance with a new mom. She absolutely had her body back, it was impressive. Anyways she was a deadeye with her nipples. She could scoot back so she was just barely still on my knees, lean way back holding onto me with one hand, grab her breast and shoot right into my mouth. Didn’t spill a drop. Tasted like honey dew melon.  

 
Haven’t done anything like it since so I guess it didn’t turn into a fetish but it was very hot at the time. I think I’ve been to a strip club five times in my whole life, and one of them that happens. Go figure.

I just had this opportunity a few weeks ago.  It was flavorless.

Be gentle.

As a Mother who breastfed it’s best to be kind, caring, gentle & respectful. Remember she has emotions raging at this time. Be appreciative. Tell her she’s beautiful because she probably does not feel pretty at this time in her life. Creating a life is phenomenal, but the body is never the same. Most of all have fun exploring this new erotic adventure together.

Oh my, I was fascinated with my boobies when I was lactating.  
You guys got to have all the fun, learning to aim by peeing on Cheerios in the toilet bowl, writing your names in the snow, lol!  I recall laying in the bath, squeezing my nipple and watching how far the milk could shoot into the air!  It went pretty far, and it was quite amusing.

I didn't read the label, but maybe ...