No co-sleeping let them sleep in their own crib preferably in their own room away from you.
All I mentioned above but even more of it. This age babies learn what to do to get whatever reaction they want from their caregivers. They have figured it out. This is also the stage where separation anxiety kicks into high gear. Google 'separation anxiety' and use those tips. It is a hard phase, but if consistent you both will survive with your sanity and eardrums in tact :)
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