you might need another couple of weeks as has been a fair few reports of needing 4 weeks uptime.
Maybe we can starti to build up a picture of how DLM returns to a normal state.
Banding seems to be removed, or adjusted for the better, in about 5 days (my connection jumped from an IP profile of 52Mbps to an IP profile of 75.05Mbps (so a connection just shy of maximum) after a solid 5 days up-time).
It's now been just under 18 days since then and I'm still waiting to see if the 80Mbps sync (which I've had since 80Mbps was rolled out) returns.
Not quite sure whether the missing few Mbps is due to interleaving (seems a little small for interleaving - I'd have expected a bigger drop) and pings are 14ms to bbc.co.uk or a tiny bit of banding which hasn't cleared yet.
I'm guessing if something's due to happen it will in the next 10 days (by the time it hits 28 days up-time).
vDSL2 FTTC Infinity with BT
DL Sync 80Mbps
UL Sync 20Mbps