Did you use a program and if so what was it?
Sam Blumenfeld’s “Alphaphonics” book. It’s about $20.
The hard part, or the boring part, is teaching letter sounds. Sesame Street teaches that. So there’s no need to do flash cards anymore.
The first day was traumatic for both girls. See, “A,” “ah,” and “T,” “tuh,” makes “At!”
“Wah!, I don’t get it!”
But by the end of 15 minutes, they could pronounce “at,” “as,” and “ax,” and they were off and running.