Pretty song. Which he is picking, of course. But, for a strum I can play along with a down up down down (Pause) down up down down. Hope this helps. Sounds like it's just a 2 chord song but I didn't listen to the entire song. 3121 then 3122...just bar first fret then F shape with ring and middle and squash down the middle finger to do the 3122
Hope this helps.