Cleaning the oil pick up without dropping the pan?

This is a longshot.l 96 Dakota 3.9 v6 (just like a 318 Magnum). It's starting to get low oil pressure and in a week I am going to do a timing chain and gears. 130,000 miles and loose and very noisy. I am sure the tensioner blocks are gone and that material and sludge is partially plugging the pick up screen. Any luck flushing or cleaning without dropping the pan? It's a 4wd. and I am not looking forward to dropping the pan on a creeper in the driveway.