Hi and welcome. We find we ignore "age appropriate" and go with what DS enjoyed. Around that age he loved pulling apart his matchbox toys with a screwdriver, Lego (small), reading... ( no iPad for us then). He loved fine motor stuff but we also took the time to encourage gross motor skills as well and spent plenty of tome at the park, riding a balance bike, balls etc.
It can be quite a journey, albeit isolating, and it is definitely great to be able to share here and know you are completely understood!
