Here is the text:
"How do you like your course, Sarah?" Jane asked.
"I didn't like it at first," Sarah replied. "I'm really enjoying it now."
If we change it into Reported speech:
Jane asked Sarah if she liked her/the course. Sarah replied that she had not liked it at first/did not like it at first. But she was/is really enjoying it now/these days.
I do know the rules of tense backshifting in Indirect/Reported speech, but I think I could use "she did not like it at first" without complicating the sentence with Past Perfect.
As for the second sentence, I am not so sure. "She was really enjoying it now" seems OK.
Thank you for your time and help.