Not always Mary, my LO actually preferred it the other way round... Took a while to figure out, but got there in the end. But some do like a long A before bed, we just need to figure out what's best,for yours.
The idea is after the shorter nap, the A time will be shorter. Lo's can go longer after a longer nap. I just suggested the longer am nap and the shorter pm one as that's the way I did it here. Many others have had lots of success the other way round so if you'd like to give it a go, go for it! For me, it just took the stress out of the rest of the day. Once we had that first long nap, the other shorter nap could be in the car or out and about.
You have to take the whole day into consideration too. You can have a varied A times to make sure she isn't OT before bed.
For that routine you posted, you need to not work on 2 long naps otherwise up your day will get too long and will cut into NT sleep. I think you should try to work towards 1 x 1.5hr nap and 1 x 45mins nap. Similar to what I posted earlier. You can swop the A's around if you'd like to do it the other way round so:
Wu 7
Nap 1 10.15-11 (UT 45mins nap)
Nap 2 2.30-4
BT 7
It'll take a lot of tweaking to try and get the timing right for that second nap. As you've done over 3hrs before, I've suggested 3.5hrs. Try this first and see how you go. If it doesn't work, extend the next day by 10 mins, hold it for 2 days and see what happens. If it doesn't work again, repeat. I have a feeling you'll need to get to 4hrs but we'll see how it goes!
For me, I took a week of help on here before our first 1.5hr nap. I was over the moon!
Then it stabilised and she went back to 45mins. I had to up the A again and again until we found where she wanted to be! This forum is great for that.
I'll be back in a minute for the average sleep needs for babies. Need to find the link. Bear in mind it is just a guide. Many, many babies do not fall into the 'average' sleep needs.
Typical Amounts of Day and Night Sleep