The blindside flanker still faces a race against time to play in the opening clash with Ireland in Cardiff and the following week's trip to Paris but Dragons coach Darren Edwards hasn't ruled his star man out of either encounter.
"He is on course for the start of February," said Edwards, whose team play LV= Cup matches against the Ospreys on January 26 and London Welsh on February 3.
"It wouldn't surprise me if Dan has a half of rugby for us and Wales throw him straight in.
"He's that important - we saw how much he was missed during the autumn internationals."
Lydiate sat out all four Dove Men Series Tests against Argentina, Samoa, New Zealand and Australia after suffering his ankle break in a PRO12 encounter with Edinburgh at the back end of September.
The 25-year-old was named RBS Player of the Championship at last year's 6 Nations as Wales surged to a third Grand Slam since 2005.
He currently has 27 Wales caps to his name having made his debut as a replacement against the Pumas in the autumn of 2009.