OP: how old are your kids? if they are all still "little kids," i think it really makes attachment parenting harder. AP does come naturally to me; i'm just that personality type. but it also made sense to me to space my kids far enough apart so that i would have more time for each one. and i only have two. -- and it's still hard work to meet each of their needs. i truly cannot imagine being able to "attachment parent" at the level that i do, with more than two kids under age 5. something would have to give.
cut yourself some slack.
i've worked in research positions before -- and this is how i've come to view research: studies and research give you aggregate findings across a broad spectrum of people (ideally). they do NOT necessarily correlate to similar findings in your own situation. so, while there may be research supporting how nice it is for babies to co-sleep, it doesn't necessarily mean that co-sleeping is the best sleeping arrangement in your family.
i think the best parenting happens when you let things fall into place as they should. when the kiddo shows you that he's starting to poop, rush him to the toilet, praise him for letting it go into the toilet, and simply try to catch them the best that you can. you are going to miss a few. he is going to regress from time to time. don't let it upset you! you are still ahead of the game in that he's pooped in the potty at all before age 2.
similarly, you are ahead of the game that your kids were all breastfed at all.
i don't think that doing X, Y and Z of the AP "things" is what makes one an exceptional parent. at all.
what makes an exceptional parent is the actual CONNECTION with the child that can be fostered and enhanced by attachment parenting. and/or the connection can be made in a myriad of other -- even "mainstream" ways.
so... for your own peace of mind... focus not on the ways of "attachment parenting rules" but rather on keeping that strong *exceptional* link and connection with each of your children.