Need help with sweater pattern done in Irish Moss pattern

I am having trouble keeping the pattern of the Irish moss as I increase.
Irish Moss pattern:
Row1: (RS) K1, *K1, P1. REP FROM *to last st K1
Row:2 : P1, *K1, P1 rep from to last st. P1
Row 3: K1, *P1 ,K1, rep from * to last st, K1
Row 4: P1 ,*P1, K1, rep from * to last st, P1

Right Front pattern:
Cast on 6 stitches
Work 2 rows in Irish Moss st pat as given for back.
Cont in pat, cast on 2sts at beg of next 6 RS rows, then cast on 3 sts at beg of following 6 RS rows, taking inc into pat.

Here is where I’m having trouble, as I cast the 3’s on & do the moss st pattern, it does not keep pattern. It turn out more like a rib. I can’t figure out what I’m doing wrong.

This is the link to pattern:

When you cast on 2sts you can continue with the pattern as written with essentially a 2stitch repeat. When you cast on 3 sts, the repeat is off by one stitch. You can start the pattern with a knit instead of a purl or vice versa.

Even better, look at the pattern from the previous row, and count backwards from say 4sts from the edge to determine what stitch the new row should begin on. This is “reading” your knitting and is an invaluable technique to have.
Very pretty, cozy looking sweater!

Thank you so much! I thought it looked like a sweater that would be nice for a cold day to cozy up with a hot cup of coffee. Thanks again