How do I get students to stop asking me trivial questions right before class ends?

I teach 10-12 year olds in Southern Europe. We have iPads and use various apps to communicate, share work etc. I also have a couple of kids with extra needs who require extra support. Now, it’s my first year as a classroom teacher and I really like to give the kids as much autonomy as possible, but I am struggling with the time at the end of the lesson. I have a set time during which I usually tidy up, make sure the classroom is in order and that I can reset for the next lesson. One or two kids usually ask me questions at this time - be it about what is due when, the iPads, or even something completely unrelated. This causes two issues: either I don’t have time to check everything before the next class and may end up missing something important, or I rush to check something and the kid asking the question doesn’t get my attention. So far I have tried giving the kids time at the end of an 80-minute block to finish work and ask any questions, telling them that we can work it out together during the next lesson, explaining that I need to tidy up so everything is in order etc. However, none of this seems to work. Any tips or suggestions would be greatly appreciated