Increasing your range takes time and intention. Just like you don’t just do the splits overnight. It’s a process. You have to be intentional to stretch certain muscles consistently to increase your flexibility. It’s the same range with stretching your vocal range. Don’t push it. Just do a little bit more each time and rest. Always……
The key to singing high notes is firstly believing you can. Many of my students come thinking they can’t hit the high notes but I lead them through exercises to show them they can. To increase your range though may take time just like it may take time to be able to do the splits.……