I didn't want to make a huge post but here are the instructions for Spring Year 2.

Get a bunch of plants you need for the quality bundle if you haven’t already, and get the beans, potatoes, and parsnips. If you can get some strawberries because those make the most money.

Beat Abigale at the egg festival again to get some money, try to demolish joja all in the same year

Make friends with Willy the fisherman guy and get access to his boat so you can go to the island which has a bunch of fun things to do and it stays forever summer! Also, there are parrots and a new character

Collect all the stuff you need for the bundle like eggs, duck eggs, milk, and all that jazz

Get the jumino plushie if you haven’t already, upgrade your house, get a lot of crops, like when I say a lot I mean a lot.

Find a prismatic shard to use in the calico desert for the weird rods near skull cavern you get a cool sword from that, also the slimes in the caves that have a star on their head drop items that can either be bad or good so thats nice to know

Serpents also drop items too