A Few things you could do, 1) if your vents are in the floor and your fermenting in a bucket or carboy, put the vessel right next to or even partially covering a vent, 2) buy a cheap electric blanket and wrap the vessel, OR 3) don't worry about it, leave it alone and just let it ride. Check gravity in a week before racking to secondary (or don't rack to secondary at all) and be amazed at how much has happened. I haven't been brewing for all that long myself, but what I have learned after being told time and time again by my brew buddies is, the yeasties know what to do, we just need to stay out of their way so they can do it. I'm sure your APA will be very tasty. Welcome to the addiction.