Firstly Hugs
Can I ask have you considered that you might have mild PPD, from this & the other posts you've written, I feel (having been there myself) that you are in a place of really wanting to find the 'perfect sweet spot' of a routine, which very often goes hand in hand with early PPD.
The reason I say the above is while there are a few areas that probably can be tweaked, I'd say you are in a pretty normal place for a 6 week old and you are possibly over thinking it all a bit much as your own coping strategy. For me identifying that PPD was the root of my worrying about sleep, helped me enjoy my children more & I realised that I was "worry shifting" - it's pretty normal to worry about the routine, to shift from other worries associated with being a parent.
He starts to cry and get grumpy about 45mins after E but doesn’t yawn nhntil the 1hour mark.
I agree with the PP that the A times (as you aren't including feeding in that 1 hour) are possibly too long. And yes all books are different because all babies are different. Some babies don't yawn until overtired, so to me, the crying point is probably when he should be in the setting for the nap stage. Watch him like a hawk & see if you can see things like a glazed stare or blinking eyes, or clenched fists earlier than the crying, they can all be tired signs.
With my second (to fit around my first) I did feeds from 2 to 3.5hours & a day that went 'catnap, catnap, cat nap, big nap, cat nap, cat nap. I had a routine like that because a few people told me "A baby is not going to be better or worse off for sleeping in a sling for 20mins or a bed for 2 hours, but a toddler will remember for much longer that Mum was always spending time with the baby & not them"
In all honesty (& it could be wrong, but for me it's not the case) the "perfect" routine for babies doesn't have any impact on what children are like at 5, 10 or 15yo... There was a Mum in my Mother's group who made out that she was doing everything right & that was why her child slept so well... sadly her 15yo son is off the rails, there are many other factors, but what I remember of that Mum was she parented a lot by the book (not Baby Whisperer) & her rigidity took emotion away from her relationship. I know (very much so) while at the coal face of two under two, there is a lot of grasping at straws & for type A personalities (I'm one) the desire to dot the "i" & cross the "t" is overwhelming, but from experience, that's not what necessarily has the long-term benefits.
Most of all though, "this too will pass" while you mentally can say
and from 6 weeks I always said I’d feel happy to try and guide him into a better pattern.
Honestly from what you've written he's already in a FANTASTIC pattern & over time little tweaks will make it easier, but for now enjoy & worry less.