The Baby Whisperer does not understand breastfeeding.
Your baby's pattern is perfectly normal - there is nothing wrong with it at all. It is how babies are 'designed' to feed, and in fact, in pre-industrial cultures, whose babycare is what we humans have evolved to do for 99.9999 per cent of our existence, babies are observed to feed several times an hour.
This does not match what we expect babies to do, but it's how babies' bodies come out expecting to be fed :)
Now - some babies adjust to 21st century expectations and norms fairly soon, and others take a little longer. Your baby is adjusting - she wakes once only at night as is not feeding on and off in the night as the pre-industrial babies do :)
One option is to accept that this is what your dd is like now, and that it is ok, and she is healthy, and she will change in her own time to feed in a more socially-normal (!) way. Or you can read a book and feel she doesn't come up to what someone who knows Zero about bf and Zero about your baby says and try to change your baby to fit in.
This second option is hard work and could be distressing to both of you - in fact, if you were in tears just reading about it, it's already distressing 
.
Your technique does not need changing (from what I can see) because your baby is healthy growing and you are not sore.
If you can cope going with the flow, then honestly, this is easier than fighting the flow! Your dd will be able to go longer between feeds in a short time - she is already doing so at night.
Enjoy her :)