Found a patch of reception in cottage if I do the downward dog in an exact spot of the bedroom :-)
Dh - as others have said your hv should not be telling you that (do these freaks get any training at all?)
It's your choice whether to co-sleep or cc - and unless you have a angel baby it'll usually be one or the other.
If you're happy co-sleeping for now then just carry on.
tsc is right re bf babies being a bit harder but in saying that both of mine went down fine in the evenings after a bedtime routine (felix was older probably 4 to 5 months whereas A was from about 7 weeks). A normally sleeps well on her own and if she wakes up it'll be due to wind or reflux or wanting her dummy rather than for bf. So they're all different!
Will post later if I can as F is asleep and dh is out with A so going to have a nap myself!