It’s also useful to swop around sometimes so the children see you as someone that takes the full class and not just as helper and that the class teacher gets to work closely with those with most need
I actually think that Alpaca would work so well in your setting if you have enough devices and headsets for a single class group. Once set up they get along with it independently
Just to be aware that in parrallel teaching both groups should be in one room and inspectorate do not approve of teaching the 2 groups in separate places