Normally he sleeps in a babygrow (no vest), sometimes footless, sometimes with feet plus his 1 tog sleeping bag. Tonight it is quite hot so we've put him in a sleeveless vest together with a footless babygrow and that's it, is it enough ??? He has bare feet now and I'm a bit nervous he'll get cold later which would wake him up. Window is slightly open, enough for a breeze but also locked.