Should I change companies in my apprenticeship?

Hi guys I just need some advice on my apprenticeship. So i am a 2nd year apprentice (nearly 3rd year) and i have been doing commercial work at the airport in Melbourne. I have been with this company from when i first started my apprenticeship and the work is so slow. Like it is hard to learn a lot and get on the tools often because of how slow it is and the types of works that goes on here. It's stressing me out because I feel like im so far behind, l wish i left sooner. I love being hands on too and I'm so keen to learn but I feel that this company don't offer the learning opportunities that I need to become a good electrician. l'a also like to add that l've talked to my boss about this but he keeps saying our good it is to work here and sells this job to me. I've even suggested to be subbed out multiple times but still am doing the same boring stuff. I'd preferably would like and enjoy working at a company that offer residential and commercial project installs that are more hands on and good for experience. What are your guys advice??