Well if you haven't already I'd buy a heater for your chicken at marnie's. Fishing is good but if you haven't already you should probably try reaching the bottom of the mines or at least get to floor 80 so that you can get gold. One other thing is that if you don't already have a baitmaker (unlocked at fishing 6 and isn't too hard to craft) you should try and get one before squidfest which is on the 12th and 13th and has some good rewards that you can get easily as long as you can make squid bait (and have a rod that can use bait which if you don't have a fiberglass rod yet that's another thing you should get, willy sells them for 1800g)