Going from 30 WPM to 60 WPM sounds like doubling your ability - and it is - but it does not take talent. It takes the right sequence: accuracy first, then rhythm, then speed. Here is the plan that works for almost every typist.
Step 1: Fix your accuracy first (week 1-2)
Speed built on mistakes is fake speed. Slow down until you are typing at 95% accuracy or better, even if that means 25 WPM for a while. Use the mistake heatmap after every test: the same three or four keys cause most of your errors, and fixing them is the fastest win you will ever get.
Step 2: Learn the home row properly
Your fingers should live on A S D F and J K L semicolon, returning there after every key. The bumps on F and J exist so you never need to look down. Guided lessons - ten minutes a day - rebuild this habit faster than random tests.
Step 3: Rhythm over bursts
Fast typists are not frantic; they are metronomes. Type at an even pace, take a 60-second test daily, and race your own personal best (ghost mode) instead of chasing a one-off lucky score.
Step 4: Add real-world text
Turn on punctuation and numbers once a week. Emails, code and reports are full of capitals and symbols - if you only practice plain words, your real-world speed will lag behind your test speed.
The realistic timeline
With 15 minutes of daily practice, most people gain 5-10 WPM per month. That puts 60 WPM roughly 3-4 months away from a 30 WPM start - and every step of it is measurable on your stats page.