He started unzipping the sleep sack and then waking up in the middle of the night cold 🤦🏻‍♀️

I’m considering a blanket, but in the past he would move so much it came off. Should I just do it anyways? If so, what type of blanket? How big?

And he typically doesn’t sleep with socks on, but sick the blanket will probably not be on, should I put socks on?

Sorry for all the questions...first time mama here 🙋🏻‍♀️