Any tips on 220k weak engine

Sounds like the cars at a very hard life and high mileage maybe a compression check is in order before going too much farther these cars generally don't take a lot of work with the way you were talking I thought you were talking about a generation 3 at first this is not normal for this model at all unless the above conditions are kind of met. I have four of these things in various mileages all of them extremely high and none of them produce white smoke in the morning but for a few seconds and it's got to be real cold like freezing

 

An engine is merely an air pump. It needs to draw air in and move air out. If either of these are restricted, it will cause low power, and often won't trigger a CEL. These restrictions normally show up first on uphill drives because the engine needs to breathe more than usual to make more power. Make sure you don't have a mouse nest in your intake ductwork. If you're DIY, it's also free to remove your exhaust pipe from the engine exhaust manifold and inspect to see if the catalytic converter is getting clogged. It's been known to happen....

lack of power, possible exhaust leak at manifold flange and/or clogged catalytic converter ? | PriusChat

If you find something similar after removing the pipe, and have a good air compressor, plug the exhaust end of the pipe and put a high flow air nozzle in the O2 sensor port. Blast away but don't do it in the garage and don't be looking at the engine side of the pipe because you'll likely be amazed at the black soot cloud that will blow out. Even for an unplugged cat. I do this to every Gen 2 I buy.