You also might be filling up your water heater if it is empty, that takes a few minutes before you’ll have proper flow to the faucets. Is your pump just running and running and never pressurized?
1 Is it filling water heater
2 Are the valves all in the correct position. There is a valve you turn to use antifreeze line, there is a valve you turn to let the pump suck water from the fresh water tank, there are three valves by the water heater that are used to bypass the water heater for winteizing.
3 Make sure there isn’t a leak somewhere
1999 Suburban 2500 4x4
2016 Jayflight 23RB Elite, Fiberglass, Polar Package
400w Renogy RV solar kit w/ Bluetooth, 100w Renogy solar suitcase
430 amp/hr 6v battery bank
1000w Renogy hard wired inverter
2011 F350 Lariat, DWR 4x4, 6.7 turbo diesel
2017 Open Range, Mesa Ridge 374BHS