All babies are different! I know for me it's not a competitive thing when Angus does something new, I'm just so excited at him doing a new thing that I haven't seen before that I love to tell people! It's not a boast or comparison just my silly excitement over seeing something new.
Angus went through a grizzly phase just before he was 6 mths too, and I think it was frustration, as he wanted to move to get things but couldn't. He could roll, but not sit or crawl or anything. A mere day after he was 6 m he commando crawled and suddenly was less grizzly - he could get toys and amuse himself! Now he seems to acquire more mobility every day, which means not a seconds rest as developing skills mean stacks spills and accidents. Enjoy this time before mobility and speed hit!
I understand that sinking feeling but can I encourage you as others have that all bubs are different. I have 2 girls and I am forever marvelling at how, even though they have the same parents, DD#2 has powered on to do stuff that DD#1 hadn't even thought of at the same stage but also vice versa. There has been the odd moment that has made me worry just about the comparisons between my own 2 if that makes sense but then, it has also made it even more clear at how different each child can be, whether all your own or a mixture of many children from many families iykwim. You'll probably find too that all of a sudden, your little one will start doing everything all at once!! That's when the camera has to be within reaching distance and fully charged and loaded!!! Coz you'll blink and miss it!!
I agree with the frustration possibility at not being able to go and do what her little mind is wishing to do....... even though DD#2 is almost 9months, she is commando crawling everywhere but boy can she get very cross if she cant get to what she wants when she wants. Now if she was walking around or even more sturdy on all fours, I think she'd be a whole lot happier... oh but certainly not wishing that on just yet, lol!!
DD#2 is also in a clingy phase so when out and about she can appear quite sooky and even antisocial as she'll only play socialite for so long before its mums arms or a very unhappy tyke! It used to make me worry when DD#1 did this as I was constantly thinking what are other mums thinking of me.......sooooo don't care this time around! Lol!! If my bubby wants me/needs me, and I can be there for her, of course I will!! After all, I'm her mummy and I know that she really is a happy little chappy at home, she's just a bit shy.
Anyways, that's kind of a long ramble but I hope it helps you to relax love as I'm sure your little one is going at such a wonderful pace for her own development and you're such a great mummy so just have fun with your princess!
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