I do similar check ins but in google forms. They check in and out during the day and have the opportunity to tell me anything they want to know. This also gives me a digital log so I can look for patterns and data easily. Students are eager to share and do so in much more detail on their devices. I do things in person as well.

My favorite check in for SEL is colored bracelets. I have green ones for I am feeling great inside, yellow for ok, and red for I am hurting inside. If I see a student wearing a red bracelet, I will ask if it a home or school worry. I will ask if he/she wants to talk. Students can change bracelets throughout the day. I wear one too.