We made it to 16 months. I began training for a half marathon when he was 15 months, and the more intense the training became the more my milk dried up and I think there just wasn't anything left, one day he just refused.I offered a couple more times, and he refused, so that was that. I think you're doing a wonderful job for you and your LO and I hope that you find a decision that you feel is best for everyone!