I have been cold for the last 10 years, but toughed it out.
Not this year, here is what I did that works:

I dont put My knit hat or cover alls on till I am rady to climb my stand.

I bought a kids camo sleeping dag ($14 at Dicks), The sleeping bag packs neatly onto the base of My climber, after I am up and cooled down for a few minutes, I unroll the bag, step in and pull it up to My chest, then sit.

It was 18 deg Sat morning and I was VERY comfy, PS I dropped a "Hot hands" pack into the bottom of the sleeping bag.

Try it, it's only $14 bucks.

Slack