Like many have said, the course you are on won't get you into being an LAE really. That said, I would 100% recommend you stay on and finish it. As an LAE further down the line in your career, having extra qualifications in Aerospace Engineering may set you ahead for that 'next step' into something like Tech Services, Maintrol, or management, should you decide that you fancy a change at a date.
My other peice of advice is to start sitting your Module exams NOW
. Decide if you want to be B1 (Airframe/Engine) or B2 (Avionics), and get plugging away at some exams. The Maths/Physics/Electrics modules shouldn't worry you too much as your Uni (and/or ALevels) course will have tought you much of what you need.
In the 17months you have left, you could get quite a few modules under your belt, and if you can spare the time, keep getting as many placements as you can in your holidays!