Why do you use numbers way out of sequence for some weeks?
For some weeks, notably immediately after Epiphany and immediately before Advent, there are not enough meditations in Divine Intimacy to fill the space properly. So, in order to keep the rest of the calendar aligned to the liturgical year, I fill in what meditations I can, avoiding repeating mediations within the year and trying to keep a common theme where possible.
Why don’t the readings match up with the liturgical year?
The calendar of readings drastically changed with Vatican II. Before the Second Vatican Council, there was only one reading before the Gospel, the readings did not change cycle each year, and the excerpts changed. You can see the old cycle of readings here