Bringing in double holes is cool, especially on the beginners tunes that are using the 1st position scale taught in step 2.
That’s the style of say Bob Dylan or Neal Young, they would play in first position and use a lot of doubles. I talk about this a little in ‘Hot Seat’, the second Jam to come online. The main thing is to have fun and start moving around on the harmonica, playing some music!
The more you do it, the quicker your single hole playing will come together too (as long as you do keep practicing that as well 🙂 )