Would it be rude?

My cousin just had her baby and I saw that she posted that her baby latched! I’m assuming she’s breastfeeding so I was wondering if it’d be rude or overstepping if I sent her the link to my favorite breastfeeding tips Instagram account? Then follow it up with “saw that baby latched! Congrats! Here’s my favorite breastfeeding account! Any questions or worries I had, they were able to help! Good luck on this journey!” Would it be okay or should I just leave her be?