If there's a smaller grid notebook out there, we certainly haven't seen such a thing in Kansas. I mean think about it. A millimeter is barely anything and this is just two times that. VERY SMALL GRID, YA HEAR?
It could be that your first couple months of this line-a-day journal are pretty similar ("still quarantined, played Animal Crossing, ordered delivery from Ramen Bowls") but maybe you'll emerge with a solid habit of documenting your life.