I belong to a band made up of parents of children at the school where my daughter (previously known as the angelbaby, until she hit her teen years) is in the 8th grade. Some of us have been playing an instrument for years, and can easily read music, and others are relatively new to the instrument they are playing and are just beginning to get the hang of reading music.
We practice together once a week. But those of us who don't practice more often than that feel as though we are falling behind, myself included some weeks. We have to work at our own parts so that when we get together we can work at sounding like a real band sounds and not a group of people who are trying to play instruments they are just learning how to play. We have also found that when we play with enthusiasm and joy, our sound is much better than when we play like timidly.
I think the same thing is true of the spiritual life. We are all at a different point in our spiritual life, and when we come to a point in the Church year like Holy Week, the more time we have put into our own spiritual development, like we should have been doing throughout the 40 days of lent, the more We will come together as One during this week.
Don't just sit back and let Holy Week happen to you, enter into it with all of your enthusiasm and joy, and not with timidity. Even if you haven't been practicing as much as you wish you had been the last 40 days.