Honestly, you do not need to worry about bad habits etc!
Baby will not still want to sleep in your bed when he is 18. He will leave when he is ready and as long as you are happy with that, don’t let anyone else make you feel badly about it.
My son is 10 months and I’m always asked when he’s going to move into his own room. I just say I don’t know and move on. The answer is probably not for a very long time but I LOVE co sleeping. And so does he, he sleeps 12/13 hours a night. Why the fuck would I change that?! 😂
Personally, I think self soothing is a myth. The idea that babies should be independent boggles my mind. They’re BABIES. Who decided that it’s ok for them to rely on you to support them with eating, drinking, bathing, clothing, housing, etc etc but NOT with sleeping? Ridiculous.
I don’t think we got a nap routine going until about 8 months and even now it’s not set times - it’s just two naps a day of varying length at roughly the same time of day (I guess within a two hour window)
There are so many expectations around baby sleep and 99% of them are horse shit.
You know your baby and you know yourself. If it works for you and is done safely then it is fine, I promise you!