The next night, the zoo, the zoo (these two are next to each other and can play together)
On the third day, Orchard Road (shopping has DFS and there are many big shopping malls) and Botanical Garden.
On the fourth day, Little India Chinatown (these two are also very close) and then go to cityhall in the evening, because the night view is beautiful (I suggest you buy a one-way ticket for Merlion, sit at Kela Wharf and enjoy the night view of the river while eating Chili crabs).
On the fifth day, you can walk around the hotel and learn about life here. If you still want to play, you can go to a museum or something.
As for food, Hainan chicken rice, Satay, pancake Plata (I like it very much), Baku-Gucha, curry fish head and Chili crab are all delicious.
Lesha is also a major feature here, but I didn't like it very much when I first ate it, but I gradually liked it.
There is also milk tea in koi fish, which is super delicious, and it is available in Chinatown or bugis.
When visiting Orchard Road, there are also many snacks under the mall. Donuts, octopus baked and fried rice cakes are also delicious.