Good lord!!
He is only 6 months old!! How 'independent do you want him to be? Maybe it is a ready-made child that you were hoping for. Sorry...but you are still at the beginning of your journey with him...and he is still reliant on you...for cuddles,company, and sustenance. He is behaving quite normally,and showing his need for you.He may also be picking up on your stress and reluctance to give him what he needs. I think he should be your first priority...maybe cut down a bit on the number of OTHER children in your care. You should not even be thinking of making a choice between one and the other.