If I were to guess I'd say it has nothing to do with you moving him out of the bed and is just a difficult phase relating to the other things. If he is right beside your bed, presumably you can reach out and hold his hand etc to comfort him when he does wake so I really don't think he'll be feeling separation issues. Also, if he is crying for a few seconds but no more when he realises he is being moved then that sounds like he's adapting fine to the change and really not traumatised by it.Â
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I found with mine that leaps in development in terms of speaking often went hand in hand with frustration that they couldn't communicate more! Both mine did some minor head banging as well and I think that was partly due to lack of communication too - ie, baby is cross but can't communicate it, if he/she hurts him/herself then it becomes a more simple problem to solve ie sore head = cuddles to make it better. That was just my amateur baby psychology, but that's what it always seemed like to me. Has your schedule been busy recently? Maybe to counteract some of the issues you're having, a couple of low-key days where you don't go out or do much in the house other than just lie around with baby and play and have lots of cuddles; use TV and movies if you are ok with that or else music, just aiming for lots of reassurance and not too much outside stimulation. Try not to get too stressed about the sleep issues - these are always going come and go as little ones grow and develop. Persist gently with your routine and you'll probably find that once the teething and other problems recede, things will go back to normal pretty soon.
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Sorry you're having a hard time and hope it gets better soon. I usually found that when mine were going through a difficult phase I'd get pushed right up to the "I really have to do something about this, can't take any more" point before things would naturaly just get better on their own - these phases never lasted too long (like a week or two) although of course at the time it felt like forever. Good luck.Â