No problem with time, I have re-engaged in correspondence chess late last year and currently play/have played 22 matches against 11 opponents - except those I have already won
they are running since several months. So, I'm used to it. In CC, tournament rules usually give a mean thinking time of 3 days per move. Which is not even much, when you play so many matches simultaneously. If your job leaves you even less time and you need four or five days, then that's how it is.