You two have given some brilliant advice!

I really want to point out the over tiredness thing, you haven't got a snowflakes chance getting bubs to 'self settle' (certainly is open to interpretation isn't it!) whilst he is overtired. Do what you can and whatever works to try and break that cycle first, then start with the tired signs and give him the cues.

From one who knows how hard this can be - prepared to be a little more patient because once you are start the sleep routine you will need to keep it up for awhile before you see any changes - hang in there xoxoxo