Should I wake baby up?

Ira
My baby just turned 4 months and she has started sleeping through the night. She goes to bed at 9-9:30pm and wakes up directly at 6 am. Agree I am happy as I am also getting my sleep but I almost had a panic attack the first couple of times she slept through the night. She is EBF. What are your experiences and opinions about this. Should I let her sleep or wake her up at least once to feed. She is healthy and gaining weight properly