I put in 4 x 1.25" PVC 4 foot PVC well points into the ground between 20-23 feet each. I am using a StaRite HNE-L 1HP pump. All 4 wells are PVC to each other and to the pump with a 2" check valve. I start pumping water and after a couple of minutes i open the discharge side and the pump will pump water and eventually pressure drops to 5-10 psi and struggles to keep up water demand. What can i do to remedy this issue? I want a shallow well to irrigate my lawn.