Getting Felix to sleep through - ninth and tenth night

Sleep report night 9:

After our wibble, we did a proper bedtime routine, on time again. The trick is to get him used to falling asleep by himself, as opposed to being fed or cuddled, then he'll know what to do if he wakes in the middle of the night. Only Felix wouldn't settle, because he was still hungry I think, and when I went to feed him around 8pm he fell asleep at the breast and I couldn't rouse him. What can you do?

So in the middle of the night Felix woke up around 2am and cried for 10 minutes, which woke up Jambeans. Then I went to get Jambeans into our bed and check Felix, which made him cry harder for another 10 minutes. Then he was completely quiet, and it toook about 20 minutes for us to all relax again and start to doze off, when he woke up again and cried for the next 40 minutes. Total ordeal lasted about an hour. It was OK. Jambeans managed to ignore it and fall asleep pretty quickly which made it a lot easier.

Sleep report night 10:

Felix slept through again. Yaaaaaaaaaayyyyy!