Yes that's what I did but only insert however many you feel comfortable inserting! I gave birth at exactly 40w on the dot so it didn't help jump start labor for me but it helped soften me.
Once I hit 37 weeks I inserted 6 pills vaginally (poke a hole in them) and I did that 3 random days over the next 3 weeks and it helped thin me out. It does not induce labor but it helps soften your cervix and if you rub some on your perineal area it will help prevent you from tearing. I had an episiotomy anyways though. You cannot overdose on EPO vaginally however you can overdose on it orally so only take one orally unless otherwise told by your doctor