When I was still studying at UST, one of the enlisted PE subject options was Adapted Physical Education. Adapted PE is specifically for physically and mentally incapacitated individuals. According to one of my blockmates, activities included simple playing acts like kite flying, puzzles, etc. I don't know if there are APE clinics in Manila but you can conduct it yourself. Here are a few activities for reference: http://www.heartlandaea.org/special-education/special-education-services/ape/adapted-physical-activities/
This is quite a read, but it answers your question: https://www.down-syndrome.org/reviews/27/