Raspberry leaf tea

So I’ve heard a lot about how Raspberry leaf tea is great for shortening labor and helping to prepare your cervix. I spoke to my midwife briefly at my 28 week checkup and she seemed unconvinced it worked and told me not to drink it until 37 weeks. I was curious if anyone has still drank this after their midwife/OB said to wait? Everywhere I have read it says this tea does NOT induce labor and that’s what I tried to explain to my midwife but she didn’t seem to understand. I am still wanting to start drinking 1 cup a day like I seen recommended around 30-32 weeks. Should I just drink the tea even if she says to wait? Or should I try to talk to her about it again at my next appointment?