People say to eat lots of pineapple or dates, have sex, exercise, take primrose oil or castor oil
I hear that orgasms help along with just good old sex even if you don't orgasm, seamen is known to help, walking will really help as well try walking up and down hills, nipple stimulation is a really good one as well, try taking a warm shower and have the water run on your nipples, but to be honest all of this may help for a lot of people but it really is all up to your baby and if he/she is ready yet, just keep very active and in the long run it will help. I hope this helps :)