Not at all. I just tend to focus on one game at a time, for the most part. With games like this I tend to push on until things start to feel too tedious then I take a break and play something else. I'm about 20 hours into this one right now.I'm still working on the Iron Pickaxe and I feel like I've played this a lot. Is this the only game you have?
How quickly you get tool upgrades is more about how you spend your time in-game. From my experience the tool upgrades to focus on are the Pick Axe, Watering Can and maybe the Axe. But I opted for the fishing rod as well, since I do a lot of fishing. The other stuff you don't really need to upgrade above copper.