9 weeks is still so very tiny! It’s not reasonable to expect her to sleep in the crib alone - anyone who tells you otherwise is living in a fantasy world! She has spent 9 months living inside you and the big wide world is scary. She is totally reliant on you for Survival - when you put her down, she is frightened and that’s why she cries until you pick her back up and she knows she is safe again.
I totally get the whole feeling busy when they’re awake worry, I’m the same! My LO is 13 weeks and naps on me during the day and in the cot at night (he is cuddled to sleep and then rolled in).
But you know what? He’s the happiest little baby, but wouldn’t be if I tried to make him nap alone ! Because he feels safe and secure, he is content. Sure, the sitting around is boring at times but I’ve been reading, FaceTiming people, playing xbox, knitting, etc. Do you have any hobbies you could do or take up to help pass the time?
when he’s awake if I have to do things I just make sure he can see what I’m doing and talk about it - this is an excellent and easy way for them to learn language! Plus at that age they can’t really do much else other than watch and listen. If he was massively overtired from being put down in a cot, waking, crying etc he wouldn’t be able to develop properly during his wake time anyway, we’d all be stressed to all of buggering hell, and I still wouldn’t get anything done because I’d be trying to force him to do something that goes against his every instinct! And why? So I can scrub the toilet or hang the washing up? Because a book told me to? Baby doesn’t care about any of those things!
You may find that liking the sling comes in time - also are you putting it on correctly? It’s so easy to do it wrong - I know I did for ages! Even now he will kick off massively for about 5 minutes and then is spark out! It’s literally like he’s mad as hell and then a switch goes off and he’s asleep😂 But seriously, when I first put him in you’d think I was murdering him! What type are you using? Changing types really helped as it was more comfortable for him when I was sitting down
Look at it this way - when baby is all grown up, will you look back at these days and wish you’d spent less time cuddling her and more time doing chores? Of course not! Nobody regrets the time they spent cuddling their newborn.
Throw the sleep guides etc away, seriously. They are all bullshit designed to make mums feel bad and buy stuff. Just so what makes you and baby happy and the rest will fall into place ❤️ You cannot spoil a newborn with cuddles, start bad habits, or any of the other ridiculous crap some of these guides come out with!
You are doing an amazing job and clearly care very deeply about your baby, so just go with it! 👍😀