Hello, moms ❤️ How are you? It's been 15 days since my son turned one…

Hello, moms ❤️ How are you? It's been 15 days since my son turned one year old ? The last two weeks have been tough with tantrums and fits. He always wants to be "in mom's skirt" ? If I'm around, he even goes to the bathroom with me. But when I'm not home, he's good ? Is this a crisis or is he just growing up? And how do we deal with this? He cries, does nothing but demands his sippy cup and that's it.