Not getting more hours

Hello I’ve been working at AZ as a red shirt for more than two months, my SM said he thinks I’m a great worker and I’ve been doing great. I asked him if I could get more hours and that I would be open to doing commercial driving too for the hours. Despite this, I haven’t been told to start driving. He told me a bit ago that he can’t really give me more hours due to his hours being booked a lot already, but he’s doing interviews for new hires right now. I’m so confused on why he is doing interviews and looking for other hires when he is telling me that he can’t give me more hours

Can anyone give me advice on this, and if I should keep asking him for more opportunities for hours? idk if i should because I don’t want to be annoying about it