Maybe try toy rotation as well so he might be more interested in “new” toys every week
Rotate toys and games ve things that aren't toys but are safe so silicone spatulas, wisks, saucepan, tupperware ect ect
They don’t play with toys till they are about 2 years before that they rather play with you shoes or a the tv remote
My kid liked pop tubes pop its and monkey noodles at that age
Sounds relatively normal. My little girl prefers playing with boxes and keys 😂 a fun game we play is I stack blocks and she waits until they’re stacked then knocks them down