We had passed our one year timeline by a few days when I messaged them at the end of April to inquire about our stage of process. They responded within two days with the passport request letter
As a bit of a follow-up to the question about whether frequent inquiries will harm / delay the process. I'm not a fanatic, the question was about frequent inquiries - as I recall, I inquired one time about status but with a substantive question (whether I would need to get a PCC for a dependent that had just turned 18), and heard back within a short period with a "we'll let you know" or something like that, and a few days later got PPR. (My memory may be faulty). I have no idea whether these steps were actually linked or it was just a coincidence.
At any rate, my point is not that inquiries are always bad, but that they DO (or can) create work for them and overdoing it with frequent inquires serves no purpose and may cause delays.