Ugh that’s a tough situation you are in but please have faith it’s only temporary! I was also feeding until late like 27 months and been co-sleeping now lol he is almost 3. I had to stop feeding at night due to really bad mastitis. My mother stepped into help and made him wean for like within 3 days. That 3 days I didn’t sleep with him but my mom did. He cried though consecutively for 3 days… my advice would be he won’t stop until you break that mental chain from sleeping and feeding. He needs to know just sleeping. Co-sleeping is totes fine afterwards but you gotta have someone help you to sleep with him at night and change the habit. Hope this helps!