I think it's only a problem if you think you'll get tired of being the one to put him to sleep. Altho it sounds like he settles for others anyway which is great.

I feed Tallon to sleep - altho that's starting to not work as well these days And it is a little tiring being the only one to settle him, but I'm happy to do it, as I think it's very comforting for him, and a lovely way for him to fall asleep

At 13 weeks tho, I think we were usign the pram a lot through the day, it was the only place he would stay asleep, and it was handy coz if he stirred, it was easy to quickly rock the pram to help him sleep again.

I say at that age, you just do what works