How can I leave my Apprenticeship?

I'm studying hairdressing at the moment on an apprenticeship I've been doing it for 3months, I get paid £109 per week and do 40hours, I really like doing it and have had a good time. The expected duration is 3years.

However it's not the career path I want. Before I done this, I applied to a Dental Nursing school in a hospital to get on a course there. To do an apprenticeship and 1day a week in college, And they asked for a interview which I went to, And have offered me a place in September, Which I'm thrilled about, As this is the career I want.

But now, I don't know to do, How can I quit my apprenticeship in August before I start my new Apprenticeship? Do I need to give 30 days notice or what? I wanna keep doing hairdressing till then because, I don't wanna be on JSA.

Please help, I'm 19 by the way