Give it time...she's building up to it....
Probably because your course has just started
If that is your mom's routine to get on your case, are you worried that there's something bothering her? I would, and I would ask her if she's okay :)
Good for you, and I mean that in a good way. But still, if I were you, I would ask her. This shows you are concerned for her.
Thank you for sharing, and I understand. Be well, and have a fantastic and prosperous day :)