Wonderwall Strumming pattern?

Hey all

I started learning last month by following Justin Guitar tutorials and I have completed 4 modules which covered the following chords - A D E. Em Dm Am

But I really wanted to learn Wonderwall and even though it is on a higher level and not recommended for beginners, I decided to give it a go.

The chords are fairly easy but the strumming pattern is giving me a hard time. Can you guys share tips?

Also do you think I should revisit wonderwall later in the journey and focus on learning more chords and easier songs first?

Please help :c