Hospitalized at 30w due to pre term labour contractions. Induction at 37, 38 or 39 weeks?

Dear mummies, I have been hospitalized since week 30. When I was admitted, I was given magnesium sulphate and dexa to tone down the contractions. The contractions stopped but my cervix dilated to 5 cm and doctor advised not to discharge as I may deliver at home. I have been hospitalized since then for 7 weeks. I am 37 weeks today. OB advised that I can induce anytime now and deliver the baby if I want to be discharged. However, I am undecided as articles online from the US mentioned it's best to wait until 39 weeks. But it would also mean I need to stay in hospital for 2 more weeks. I want the best for my baby and torn apart on what to do. Can fellow mummies share your experience? Thank you.