I only have 1 data point but it took me about 2-3 weeks to touch type with Dvorak and I found friends who learned QWERTY took much longer, as much as half a yea

I only have 1 data point but it took me about 2-3 weeks to touch type with Dvorak and I found friends who learned QWERTY took much longer, as much as half a year. I also was learning piano so that may have been a factor.