I started a new save with each of the 2 major expansions since I started with v1.3 in 2017, and I chose a new map and ended up with a new spouse for each. So along with the additions to the storyline, the general playthrough was different enough to be fully fun and entertaining. I very much recommend this. Some of the new content can happen already in Year 1, though you're likely going through Summer before seeing the first of those opportunities.
In addition to the above changes, maybe focus a different thing than what you remember doing on that old save: Maybe more Mining than Farming. Maybe more Fishing than Combat (if you got the hang of Fishing of course!). Maybe more Farm design and layout than land-use efficiency. Maybe just taking it eeeeeasy and committing to that 6-hour workday from noon-6pm, capped off with JotPK in the Saloon until past midnight. Maybe Tailoring every outfit in the game (focus on getting Cloth to get access to the Sewing Machine asap) and then obtaining the unTailorable shirts.
Here's a tip to make those early stages less frustrating: focus on befriending Caroline to 2
(using Foraged Daffodils) to get the Tea Sapling recipe and then craft and sell those. They make a lot of g for the effort and can ease that shortage of g that happens in early game. IMO it's a little too overpowered for a first-time player as the process of finding the game mechanics is much of the Magic of playing SDV but you've played already so IMO this is fair game. I did this in my most recent save and yesh, it's real nice!