I started to really push the point with night weaning my second son when he was two and I was exhausted. It was a long drawn out process and I celebrated those early morning feeds as at least not being middle of the night feeds as he slowly stretched out the feeds. We found making sure he had STACKS of protien before bed really helped him sleep longer too.

One thing that helped us was the book "Nursies when the sun shines". I highly recommend it. We would read it every day and use the lines from it during the night to help remind him to wait for morning.