Setting boundaries

I’ve recently put in a boundary with my parents mainly my mum to not contact me via WhatsApp and text message anymore as I find it stressful her messaging me so often asking about my little girl asking so many questions it’s exhausting and I get caught up in explaining myself. She says she just wants to check how I am, I’m a stay at home mum, but I do not feel that her contact is aimed at supporting my mental health it is just an incessant need to know every little detail about our little girl. She messages every day and I hate it, our relationship nearly totally broke down recently we have a lot of history and it was an opportunity for me to put this boundary in. It does not mean we won’t speak in person or phonecall just not via message which is her preferred method in our relationship. This boundary has lasted one day and she’s messaging me saying hope you’re ok. I am ok I’m enjoying having some god damn freedom and I’m concerned this is also going to cause stress… any advice welcome particularly from someone who’s been though something with another relative