Unfelt stress as DA working on becoming more secure?

I'm dismissive avoidant (40M) married to fearful avoidant wife (41F), three children. After finding out I'm DA, seeing the errors of my ways, and reading up about secure behavior from attachment theory, Gottman, and EFT, I radically changed my behavior two months ago to be much more emotionally present for my wife and children. This has been incredibly successful with my children and is clearly resulting in gradual improvement in my previously very distant marriage with my wife.

Surprisingly, when made my change, I also started feeling emotions and empathy that I wasn't able to feel before. I can feel happiness, sadness, love, and longing (only for my wife). I really like this. It's amazing to see how seeing my wife smiling can lift me up, which I didn't experience before at all. I like it, and prefer even sadness over numbness.

I haven't felt some other emotions yet, for example: anger, fear, disgust, resentment, and stress. I think I have a very special relationship with anger. As a child I really hated my father's volatility, and I think I've never felt anger as others feel it. I vowed as a child never to use swear words or insult people, and stuck with it to this day. When I show anger, it's to deliberate to achieve a specific goal and measured to be not more than needed for this goal, and not felt at all. As for fear, I think I've had no reason for it since my "awakening". I'm happy I cannot feel disgust, as I've had to clean up a lot of my kids' vomit in the last couple of days. I haven't felt resentment either, despite finally realizing now how negatively my parents affected me in my childhood.

So this leaves stress. I've always thought I'm not sensitive to stress, and I still don't feel it. However, I started noticing some things. Ever since I made my change two months ago, my sleep has been very poor. I can usually fall asleep okayish, but I wake up ~4 hours later and find it hard to fall asleep again despite staying in bed and not using screens. Before my change, I slept 6-7 hours without difficulty, and 4 hours is definitely not enough for me. I also noticed I now have an urge to drive very aggressively (speeding more than usual, fast corners, tailgating, passing on the right). Fortunately I drive my car very little (use bicycle for almost all trips) and I don't do it when the kids are in the car, but still new behavior for me that I'm not proud of. Another thing I did was that, when a coworker was talking to me and being friendly, I made up an excuse to get out and fled to another building, where I continued to work in a spot where I knew were no people. This is a normal avoidant urge, but I gave in to my urge to escape where I normally probably would not have and I'm not proud of it (I realize it was unkind to her and did repair later on). I also feel alcohol seems more appealing to me than before (I quit 18 months ago and am definitely not starting again though).

I'm wondering now: do these things maybe indicate my changes (much more emotional presence) are causing stress I don't recognize? Did anyone have similar experiences when working on getting more secure? How would you handle this?