I bought a new iPad Pro 10.5 2 weeks ago. It was manufactured in Sep 2018. I checked battery health with imazing and it was 100%. Last night I checked it again and it has dropped to 98% in just two weeks. That seems a lot and I don’t know if it’s because it was manufactured a year ago and not used until I bought it. That seems a lot to me in 2 weeks. Should I be worried?