Heather, you are getting a lot of advice already and I don't want to confuse you more, BUT...
When you started the thread LO didn't do long enough A time, do I remember that right?
How did you jump to a first A time of 3h?
My LO (same age like yours), gradually increased his A time throughout the last two months and his first A time is now 2.45-2.50. I know that all babies are different and we can't compare the two of them despite the fact they were practically born a day apart, but I am more worried it was a too big jump in his A time iykwim.