Must must must...
or not.
In practice, rote issues can take a little effort at certain stages of learning, but the real journey of years is in learning to use the body optimally.
You can be the fastest to master the things beginners worry about or the slowest - in the long run, it really matters not a bit, because the things that beginners are worried about are just not very substantial parts of the overall art of dancing.
Keep with it, give it your best when you can and don't beat yourself up when you can't. The more you learn, the more you will start to discover where the really important challenges of dancing are.