Well here are some things that made it easier for me. TBH sometimes I do it too fast.
First let me say how I actually do it. Fb store. cr.MK, Fwd, release FB, fwd+MP +MK, full Ultra Motion then Buttons.(and it feels to me that I dont release the fb right away helping me time the end of the ultra input w/ the end of the dash) There is a shorcut but for me it seemed much more restrictive. I havent tested it in AE but thats how it felt to me in Super.
Now, I believe because I played Ryu and Abel before Super came out, It helped me as far as it forced me to practice certain things that for the most part Juri doesnt have to do. So these next suggestions dont necsesiraly invlove Juri but it will help IMO.
For example, one common scenario is Ryu would bait the other guy into a FB war. Then he would focus through their FB, and then ultra thru their next FB. So practice a simple dash fwd ultra. Its much slower than Juri but its the same motion(maybe you can already do this but if so read on).
The next thing to practice is Ryu’s crMK to ex FB, to Ultra. Same thing as above except you gotta be a little faster.(If you can already do this then disregard)
Now how to make yourself faster.
First one of the things I did was to double up the joystick spring to make it stiffer.(assuming you are using a joystick). It helped me in two ways. Because of these small ass sanwa sticks, it forced me to have to change the way I hold the stick(which could be another change you may need to make) I dont know if the Japanese got some small hands or these sticks are just made for kids but I pretty much had to abandon my my old street fighter grip to pretty much have my hand off the stick almost all of the time.
I probably went a little overboard and made it too stiff, but what ended up happening is it ingrained the muscle memory since I had to use a little more force to get out the motions
Now the actual speed training. I think I’ll put it in another post so this one wont be too long.