Winter Bluegills

I have a relative new pond. I'm trying to stock it with bluegills for
the grandkids when they come over. This is Oregon so temperatures are
in the 60's during the day and 30's and 40's at night. The 3 bluegills
I now have in the pond were caught when it was warmer and they don't
seam to be feeding at all now and my fishing, at a neighbors pond,
lately has been very spotty. I've read numerous posting about winter
bluegill fishing and am wondering if most of the things said are theory
or do bluegills pretty much stop feeding during winter.

The last two times I fished I caught 1 bluegill each time and it was
always on the first cast and then I could see them approach the bait
but would not bite. I've been useing crickets and wax worms for bait.

Anyone with fishing reports specifically about bluegill in winter.

Geez