Sorry not to respond last night-I lost internet connection. We are in the mountains at a resort and they don't have their wifi up yet.
As Jimtoo suggested, I will first try draining some water from heater then hook up again.
TedS- the hot water flow decreases to no flow at all. Cold water flow is fine.
Thanks to all for helping me - branson4020, cookie and danemayer too.
My husband is not here to trouble shoot all the suggestions. There are a couple of guys in the park willing to help me. I will keep you posted on our progress! Thanks again!