I hired the baby sitter, when my child was 12 months old. Although the child is too young , it needs to get help from others. I have to go back my workplace. It has been about 5 years since we were together. My sitter is very kind and knows my son very well. Sometimes my son act like picky, but she understands him. I always feel thanks to her.
here's the corrected version of your paragraph:
"I hired the babysitter when my child was 12 months old, and because my child is still very young, I need assistance from others while I return to work. We've been with the babysitter for 5 years now. My sitter is very kind and knows my son well. Sometimes, my son acts a bit picky, but she understands him well. I'm always grateful to her."
