When I had 1200+ reviews after a long break it was overwhelming to try and get through them all. It was also very discouraging to get so many wrong which only made me want to do them less.
My answer was to just do 100-200 a day (more if I felt like it) and I sorted them by level doing the oldest first. It took a while but this isn’t a race - slow down if you are feeling overwhelmed. Take a step back and think about what is realistically possible and what isn’t going to discourage you - after all most people are here because they want to learn…so don’t make it a chore.