From my experience, with one bub and watching other mums I am close to, at that age - don't worry about bad habits, do what your baby needs. I did lots of things with DD that others would tell me I was creating a rod for my back - but all I created was a flexible, secure bub (who we could travel around the world with).
DD was exactly the same and then at about 7 weeks she finally realised she could make noises other than scream and would actually lay on a mat/the floor with a toy for 10 minutes while I made a cuppa or something. A sling was awesome because it frees you up to get on with things while still 'cuddling' bub - absolute sanity saver for me.
DD also only even catnapped (I mean REALLY catnapped - 3 x 15mins a day... none of this 45 minute luxury) which I stressed about a lot as by 'the book' she was never getting nearly enough sleep. Life was much better when I stopped stressing, stopped spending half my day trying to get her to go back to sleep, stopped trying to make her go to sleep the milisecond she yawned or pulled her hair, or any other suggestion offered and just accepted that she needed less day sleep than most bubs.
On the flip side I've watched people close to me establish very good nap routines early on with bub self settling at just weeks old, but the routines they needed were often so rigid that the HAD to be home at nap time which, IMO is just as restrictive, if not more, than having a bub attached to you all the time.