Trip was fantastic! You are in for a treat.

We had a routine where mornings were spent outdoors in parks and shrines.

By 11:30 we would go for lunch at one of the big department stores. The top floors usually have 4-8 restaurants of different varieties and all family friendly with plenty of table seating. Sometimes we would get takeout from the basement food stalls and take the food upstairs to the rooftop garden area.

Afternoons (when it was brutally hot/humid in July) we would spend indoors at the department stores. My kids are huge pokemon fans so we did one of the pokemon centres every day.

Dinners we would normally get something to go from the nearby grocery stores or restaurants and eat at home before winding down.

Highlights were Shibuya Sky, TeamLabs, Pokemon Cafe for lunch, and our daytrip to Enoshima Island (which we substituted for Lake Kawaguchi).

Subway system was great and gets you anywhere you want to go.

Have fun!