Still only rated on 37 games I believe.
But because he missed the end of last year (6-8 games or so), those 3 unrated games will persist until late 2019.
44 games in the 2 year window, if you miss 5 or more you start losing ranking points due to the 40 game system.
If that's what you meant?
If he were rated on 40 he'd be in the mid teens for sure.