The one tip that I've found most helpful and keep going back to it's to ease into the word. Like to really softly ease into and elongate the start of the word. Even thinking of it as just making the first letter as a sound for a second and then flow into the word, but try not to rush into or through the word. Doing that has kinda helped me with plosive starts aswell, the way we think of them as sharp, staccato snaps makes them worse imo and trying to slow down and think about something like a hard 'T', and slowly bringing your tongue down from the roof of your mouth rather than snapping it down helps to lose some of that tension that you can build up. It's really helpful to practice it but honestly you can even use this in just regular conversation without sounding obvious. I mean if course if you rrrealy stretch out (like how you would if you were to practice it) the sound, it can be noticed but just slowing it down can sound natural enough.