It would be impossible. You would have to offer a large raise to teachers, and even if you could do that, it would still have severe issues for the children. Online classes and all the issues that come with it from learning or general technical issues are stressful and come in droves. Kinds are going to need the break.
No school district was prepared, but some had a small edge. For example, my school district closed sometime in March of 2020. We had a big advantage compared to most schools in the area. Over the past 5 years, we've been giving Chromebooks to every single student in the district to keep. We also gave MiFi's to every single student so that they are able to be in classes regardless if they have an internet provider or not. Despite this edge, we were unable to open schools until September. The reason being that Teachers had to goo through extensive training on how to use Zoom, Google Meets, how to see the screens of students, control who enters rooms, etc. It didnt help that the Technology department is understaffed and had to work with some impossible demands. It still ended up being a disaster in September, with a lot of emotional teachers, Technology workers and Students. There is no way you'd be able to get anyone to even think about the possibility of returning in Summer without an hefty vacation beforehand.
May not be the best idea, but I think a start would be offering every student the possibility of attending an extra half a year of School. Their placement being based on their results in the Maps Test. Summer is not enough time, since countless schools closed as early as the first week of March. Many schools in Northeastern USA end classes in late June. 2 Months isn't enough to repair that damage.