Transmission harsh shifting or shift shock?

This is common when the countershaft sensor starts to go out but, we should check the fluid level and condition in case the transmission needs to be serviced. Also, is there a check engine light on? If so, please go over this guide to get the codes.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Here is a generic guide to help you step by step with instructions in the diagrams below to show you how on your car.

https://www.2carpros.com/articles/how-to-service-an-automatic-transmission

Note: Use a 3/8 drive ratchet for the drain plug.

3. Remove the drain plug and drain the automatic transmission fluid (ATF).

NOTE: If a cooler flusher is to be used, refer to ATF Cooler Flushing.

4. Reinstall the drain plug with a new sealing washer.
5. Refill transmission with the recommended fluid into dipstick hole to the upper mark on the dipstick. Always use Honda ATF DW-1 (ATF-Z1 has been replaced with ATF DW-1, Honda Service News Nov 2010) Automatic Transmission Fluid (ATF). Using a non-Honda ATF can affect shift quality.

Automatic Transmission Fluid Capacity:
2.7 L (2.9 US qt) at changing
6.0 L (6.3 US qt) at overhaul

Check out the images (below). Please upload pictures or videos in your response to the problem so we can see what's going on.

Usually there will be a trouble code for the shift solenoid, but I would test the shift solenoids with a voltmeter to see if one has much lower resistance than the other, they should be about the same.

Here is a guide to help:

https://www.2carpros.com/articles/how-to-use-a-voltmeter

Check out the images (below). Please let us know what happens.

I believe so, remove anything in the way of doing the job, if you are not sure upload an image so I can help walk you through the repair.

You are welcome please let me know how it goes.