Normally, changing your scale with the /attribute command ONLY changes your scale, Resizable changes that. Resizable adjusts many of your attributes, including but not limited to speed, step height and jump height. When changing your scale via /function ncs:resize {t:"<target>",s:<scale>} you will be able to play the game at your desired scale. The formula to find the correct scale (s) is <blocks>/2. Using that formula, the way to find the command to change your scale to half of a block is as follows:
/function ncs:resize {t:"<target>",s:<scale>}
<target> = @s (self)
<scale> = 0.5/2
<scale> = 0.25
/function ncs:resize {t:"@s",s:0.25}
