Hi Jen! Hope you and your new LO are doing well! Typically, a 40 minute nap will indicate UT and maybe need a 15 minute A time increase. This was the general rule with both of mine. Most LOs will do well to have about 20 minute taken off the next A time to help keep OT at bay. I would start with the 1st A time and push it out by 15 minutes tomorrow to set the day up right. If you get a good nap, I would go ahead and push the next A as well, the same amount, and then see what you get. How is LO upon waking, crying? Babbling? Hope this helps, you are doing great!