what jacob is doing is just another stage of his development all babies seem to go through a period of clinginess it is just another part of their way to growing up.
i think some are more clinging than others, my first dd was sooooooooo clingy and it lasted for quite a long time, jay was pretty good (probably cause he had his sister running around with him) so far lani is pretty clingy and will cry if she sees me walk away (particularly if she is tired) but hey when you gotta do stuff you just gotta do it.
i remember reading somewhere that this stage can go on for some time - maybe up to 12mths or so (can't remember sorry) if i find the article i will post some of it.
The best thing i find is i am constantly telling lani what i am doing, where i am going i will be back soon etc etc - she always hears my voice whether i be at another end of the house or the same room, playing peek a boo is a good game to do, as they soon get used to the idea that sure you go away put you always come back.
Another thing i read, and i don't know how true as i have never been in the situation is that some people believe that between the ages of around 8mths to 12mths is probably one of the worst times you can put your baby in childcare, because of this stage - i don't know the truth in that but i do remember reading about it.
All i can offer is the playing peek-a-boo ALOT lol, constantly telling jacob mummy is here and will be right back etc etc, i know it is heartbreaking when they try so hard to follow you they crawl with the tears streaming down - don't worry jacob will soon be running away from you to play with his buddies and be too busy to be with his mum.
i am lucky i have jay who adores his little sister and hates seeing her cry so when i need to go off and do something and she gets upset and starts crawling after me, he gets down on his hands and knees and crawls with her - she soon gets distracted and they end up cacking at each other laughing.
good luck - hopefully it won't last too long for you.
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