Question

doctor said "take medicine on time" convert into indirect speech?

Answer 1

doctor said that you have to take your medicine on time I hope this answer is wirte

Answer 2

The doctor advised taking medicine on time.

Direct and indirect speech: In the instant of reporting verb in the present tense then reporting verb should be added and a preposition 'that' without changing the speech reported.

A method of expressing the content of statements is called Indirect speech. Queries or another statement, without quoting them specifically as in the case of direct speech.

For example, He said "I'm going " is considered direct speech, whereas He said that he was coming is considered indirect speech.