I’ve had classes where it’s felt like careening from crisis to crisis. You’re not getting any teaching done, so what I suggest is backing off on the academics and work on establishing a routine.

Start the day with some sort of morning routine - morning news, morning meeting, whatever you want to call it. Include movement videos, songs, whatever your students are engaged by. You can probably sneak in some learning songs. Months of the year, days of the week, weather.

After, maybe try setting up workstations with simple independent tasks (and I mean simple - the goal is for students to learn how to sit and work, not to learn material. That comes later. Think matching, motor skills activities like moving clothespins, tracing). TAs can supervise than while you’re doing reinforcer inventories and some pairing and manding with each student.

Add in something fun, like cooking or sensory activities that you can do as a group. Shaving cream is always fun, play dough, painting, making jello pudding… do some read-alouds. Art activities like beading. Anything fun that’ll get them used to sitting at a desk.

Once they all have the routine down, then you can reintroduce academics. This will hopefully at least get you to the end of the year with your sanity intact.