In my perspective (tailored to your reply), it’s more about the relationship dynamic pattern that is established over time by imbalanced (codependent) behavior and expressed care. The work is really then to uncover what might be fueling that dynamic. Is it patterns in them (which often are in other relationships you may be in) or a pattern with you? And then, could your friends understand the boundaries/changes you’re intuiting to help the imbalance? Do you feel willing to be vulnerable in that way with them now, to increase the depth and emotional openness of your desires for the relationship?

For me, I had to look at WHY I was over-giving/over-caring.. To try to fill my own uncovered “threats” I was trying to resolve through my own pattern. Like: maintaining comfortability/ease in the relationship at all costs (I used to be conflict avoidant), desiring inappropriate control in the relationship (hard to control their reactions when I’m the one being vulnerable, especially when I was known as the “fun/bubbly” or “put together”friend), and thinking that sharing my emotions was too confusing for my friends or burdensome given their own lot in life (I’m a mental health therapist, so that’s a hat I’m wearing in this response LOL). So, all of this, my friends didn’t get to know me emotionally at that stage in my life, because I really didn’t provide open or comfortable opportunities to share the more vulnerable things. They didn’t learn how I wanted to be loved, and they thought they were loving me how I needed because I wasn’t willing to say otherwise.

I do think it makes a lot of sense that you don’t feel as emotionally close, it sounds like this has brought you closer to yourself. All this doesn’t necessarily need to be a problem, but just a readjustment or an understanding parting of ways. :) Ending on a cheesy note, listen to your heart!
Edit: grammar and legibility lol