well water pressure coming and going
Usually the symptoms you describe here:


  the pressure will start to go until we have no water at all. We wait a couple hours or so and it starts working again.


Mean that the recharge rate (inflow of water from the ground to your well) are insufficient to keep up with your use. This can be compounded if the overall water level in the well varies since the water in the well above the pump serves as a store of water that can be pumped out, without needing to be immediately replenished. If the overall water level drops that will reduce your storage above the pump, and often also reduce your recharge rate.

There are a variety of techniques and technologies that can be applied, many expensive, a few less so, and they depend on the specifics of your well and pump installation. If you happen to have a well that is much deeper than your pump placement, you can sometimes lower the pump - but that's a fairly rare situation. Hydrofracture uses high-pressure water to attempt to increase the recharge rate by cracking the rock at the bottom of the well. Drilling the well deeper is a fairly simple approach, but pretty expensive since it requires a drill rig and assembling the entire drill rod to get down to the bottom of the existing well, and then drilling it deeper. Depending on your local strata, that approach can backfire.

One relatively easy place to start is to deal with any leaks or excessive water use by changing fixtures, so as to reduce your water use and thus the demand on the well. If you have an old-fashioned toilet that uses 3 or more gallons per flush, replacing it with a modern 1.25 gallon per flush (unless they have gotten even lower) unit might save a lot of water, so long as it's a quality unit that does not take 3 flushes to clear. If you already have 1.6 GPF toilets that's not such a big difference. Water softeners also vary quite a bit in how much water they use for recharging.