Last week's tooth seems to have subsided - apparently this is a Thing and normal. So, Jamie had to cast about for a new milestone:
It might not look like much, but if you will observe the space devoid of toys just next to the boy... because this was the week he got the hang of rolling from his back to his front!
He'd had rolling from his front to his back sorted out for quite some time, but from his back, all he could reliably do was get onto his side and then become frustrated about his own arms getting in the way. But now, he's rolling about quite contentedly. Which means we've got that play mat opened up just in time!