Their text system is rubbish. Some get 2 texts, some get 1, some get none. Others get a text to say awarded or decision has been made. Luck of the draw with them. So long as you got a letter saying they've received your claim, don't worry.
I'm 14 weeks today and got a text but end of last year when i went through this with another child, I'd received 2 texts by now. Never got a text to say awarded. You're a week ahead of me so judging by others comments, yours should be with or going to a DM soon and in the next 2 / 3 weeks i hope you get backpay through