I have horrible blocks on many words starting with the letter D. Are there any exercises for me to practice that one sound?

I have horrible blocks on many words starting with the letter D. Are there any exercises for me to practice that one sound? I’m (23 M) really proud of how far I’ve come and can make small talk with strangers without them knowing I have an impediment but I have dental school aspirations and when talking about it I consistently get blocked on the word dental and my name also begins with a D so I have trouble introducing myself. This makes it really challenging for me to make a positive first impression. When I get to these words I immediately break eye contact because I don’t want to be making eye contact while struggling and I find that experience really embarrassing. Any tips on improving my fluency on the D sound?