A friend of mine’s 5-year-old recently had chickenpox, and the baking soda baths really helped with the itching, she was even able to sleep through the night.
Oat baths really helped my boys x
Plenty of calamine lotion to help dry the spots up quicker Calpol round the clock if required too.
No nurofen, stick to calpol. Theres this stuff called poxclin which is good as a cooling mouse to prevent itching, same with calamine lotion.