I just had a look at this guy's website....
Apparently contact with parents is a 'reward' and should be withheld overnight to ensure sensible sleeping patterns.
ok.
Wow. I'm a little speechless.......

Lewis' Mummy you're the expert on your little one, and I think it sounds like you were doing just fine before hearing this guy's 'advice'. My DD was in a really similar pattern at around 19 weeks, and she also started adding in an extra wake up at around 10pm. Then it all calmed down again. You are doing everything right so please disregard everything you heard and go with what was working for you guys.