Kelly Clarkson was scared her nanny would quit during COVID-19 remote learning. The ‘Since U Been Gone’ hitmaker learnt how hard it is to educate kids during the pandemic as she was tasked with homeschooling her seven-year-old daughter River and her six-year-old son Remington – her kids with her ex Brandon Blackstock, 45 – with only her nanny for help with lessons during the beginning of the spread of the virus. The 40-year-old pop star told PEOPLE magazine: “I was like, ‘Dear God, I hope my nanny doesn’t quit.” Kelly wished that “we never have to do” remote learning again because her extrover…