I just purchased this 1959 home. My son replaced the faucet in the one bathroom because it was barely dribbling water, no pressure at all! I thought perhaps it was plugged because I got some hot but hardly any cold water. After he replaced the faucet and the hoses it worked great for about a week, now it is doing the same thing only worse. Now I don't even get any hot water! I can't get the nozzle off the new faucet to see if it is plugged. It really seems like the whole thing is plugged off. What do you think is going on?
Thanks!

I can't get the nozzle off the new faucet
By that I assume you mean the aerator.

Wrap several wraps of tape around the aerator and use a pair of pliers to remove the aerator.