to the point that (clause)
Use "to the point that ___" to talk about something that changes slowly, until it finally turns into something else. For example:
It's gotten busier and busier, to the point that now there's a line in front almost all the time.
His behavior has gotten worse and worse, to the point that now we're thinking about pulling him out of regular school and sending him to a special school for kids with behavior problems.