How do I start weaning off nighttime feedings?

My son is 6 months old, and he is still waking up in the middle of the night to eat at least 2 times. There are some nights he will wake up more often eating only a tiny bit, just to get him back to sleep. He has also started (just within the last couple of weeks) wanting to sleep in the bed with my partner and I. He is teething right now, so that is adding more discomfort to his life, but we are missing out on sleep. I feel like I haven't slept in so long...lol. I read that 4 to 6 months is a good time to start weaning him off from his nighttime feedings. How do I go about doing this?