Minimize Low Pass Filter Delay

With 3 feet of wire you definitely should be using a differential amp configuration. An instrumentation Amp like shown in below image would be a major improvement. The link below is to a good appnote on instrumentation amps, you should review it.
https://www.analog.com/media/en/tra...books/designers-guide-instrument-amps-chI.pdf

Thanks for the post. Ill definitely take a look it!

Any thoughts on my last post with the decaying output?