KTBAUGH,
Not a 2020 expert, but can offer a few things for you to check.
The 2020 had both a hydraulic filter and a screen on the pump suction in the bottom of the reservoir.
If it's real cold, a 2020 may need to warm up, maybe as much as 10 minutes before lift works properly.
If the tractor has power steering and it's sluggish too, it's a pump / oil supply problem. If the PS is not sluggish, it's a lift problem.
Hope this helps.