Sauron Mirkwood Ring confusion

[Morsul the Dark]

I’ve searched around and googled and best I can come up with to my question, why didn’t Sauron sense the ring in Mirkwood, is “Bilbo didn’t use it often. But Bilbo wears it nearly 100% of the time in the King’s halls for a few months. Maybe he was distracted by the Council’s attack on his base in the forest? But I feel like he should’ve noticed something it’s just up the road basically.

And I know he gains strength over time but we’re talking a 60year difference in a span of thousands it can’t be that much difference in power, can it?