Try not to do it in 2 steps, then you are learning it the wrong way.
Building muscle memory is all about doing it the same way again and again, 100's of times till you dont have to think about it anymore.
If you learn to put your fingers down in steps you will build your muscle memory that way.
After lots of practice you will grab the cord faster but will probably stil not do it as fast as you should be capable of.
Because you have learned to place the fingers in more then one movement.
Do it very slow at first, and i mean really very slow.
Before putting the hand on the strings picture in your head where the fingers should go.
Then slowly, but accuratly place all the fingers at the same time on the strings.
Repeat this, again and again and again.
Don't force yourself to go faster yet.
Only after you have done it enough times you will start to feel comfortable placing the fingers excactly where they should go in one smooth movement.
Then slowly increase the tempo.
If you go to fast to soon your fingerplacement will get sloppy, then you are building your muscle memory to be sloppy.
One of the problems with learning programs like yousician is that we all want to progress fast.
If you can do a lesson perfect once, we often think we can do it and move on to the next lesson.
But you should only move to the next lesson if you can do the lesson you just learned perfect for dozens of time in a row.
Preferable at a higher speed as well.
If you have to play a lesson several times to get the gold stars, you are not ready to move on yet.