Hi Vanessa, and congratulations on the birth of Hayley
I have to say that I agree with what the others have written.
In my honest opinion I would think that 13 days is a little to young for them to expect babies to be able to fall asleep on their own/without nursing. Though I do know every baby is different.
I found with my son that for the first couple of months he would feed himself to sleep, and that worked well for us all. A good sleep for bubs on a full belly, means a good sleep for Mum... and I believe that is the most important thing.
I wouldn't stress to much about developing a bad habit by doing it either... at this early stage in her life if something is working well, then keep doing it!!
I found that Aidyn grew out of the need to feed himself to sleep by about 4 or 5 months, and I have heard the same is for a lot of babies. I don't believe there are many 'bad habits' you can give to a baby of such a young age. As long as you both are happy, and all of yours and Hayleys needs are being met, then you are doing a fantastic job

Goodluck with everything