Yes, sounds normal, it is having two at the same time, nightmare, nearly drove me mad.
Ours are 1 today I think and have been a lot better the last few months, had a dead rat though yesterday morning. Before that they were very hard work and I swear DS was a breeze in comparison.
Luckily these two don't tend to wander far but the previous cat used to go to school, I got complaints as he was a little unpredictable. He finally left home to go and move in with a Jehovah Witness guy who fed him fresh chicken daily and calmed him right down.