My daughter was switched from 30 units of Lantus to 30 units of Tresiba every 12 hours. She has had horrible side effects from anxiety, heart racing, insomnia, and depression. She needs to go back to Lantus asap, is it ok to do the switch instantly. I tried calling and emailing her doctor with no replies. Must say transitioning to adult care has been awful and frustrating. Want my old girl back, she is 19 and has been on Tresiba for 5 months now. Also anyone have a bad reaction to tresiba?