Welcome to UU.
As you continue to read through various threads you'll find a recurring theme. In a word, Practice.
This is not a "scolding", just a gentle reminder that in the beginning, well, everything is difficult.
Cdim is one of my favorite chords now, but in the beginning I found it almost impossible to change to in time with the rhythm of a song. Now, it's second nature.
I used to think Am7 (2433) was difficult, then F#m7 (2424), but now they are very comfortable.
The key is practice, generally in the form of continually playing songs that include them.
My encouragement to you is to simply work on it from time to time. If it's part of a song you really want to play, then work on it more often. Finger dexterity will come in time, along with callouses, finger strength, and wonderful coordination between chord forming and rhythm strumming. All in good time, and accelerated by purposeful practice.