I have the tommee tippee swaddle growbag for my 3 week old and so far he doesn't seem to get on with the swaddle. The issue is he doesn't get on with his arms out either. I am contemplating getting him the love to dream growbag as it seems to give more of a leeway for the arms. Does anyone else recommend them? Also how warm are there? My concern is they seem quite thin and obviously we're heading into the winter now.