Good evening, Flower.
You aren't the first to complain about this symptom in the last few weeks... Maybe you're weak from this winters hibernation? Just kidding...
Could it be that you got used to the Vacuum being easier to push because there was next to no suction because of that split hose, and now the suction is back you aren't used to it?
I will ask you to check that the sole plate is attached properly and clean, because dirt on the bottom will create friction and therefore make it hard to push. That's a very common problem.
Let us know what you find