How do I plan out the sleeve increases?

by Marjorie M
(NC)

Sleeve Pattern (Increases)

How do I plan out the sleeve increases?

I am knitting this pattern here and have been confused for a few days due to the sleeve increases. I am knitting the size that corresponds to the second last numbers in parentheses: (19), (6th).(97) & (9)

*** = the main issue

“Change to No. 7 (4½ mm) needles and work 6 rows in pattern as given for back. Keeping continuity of pattern to match back, taking
extra sts into the pattern as they occur, *** inc 1 st at each end of the next row and the 10 (8) (11) (9) (22) (19) (20) following 6th (8th) (6th) (8th) (5th) (6th) (6th) rows *** - 55 (59) (65) (69) (95) (97) (99) sts. Pattern another 3 (5) (9) (9) (13) (9) (3) rows. Cast off.”

Do I:
- work 6 rows as normal
- increase 1 at each end for the 7th row
- Continue knitting the pattern until reaching the 19th row where I increases at each end again
- and then every following 6th row, increase 1 at each end until reaching the number of sts needed

OR
Do I
- work 6 rows as normal
- increase 1 at each end beginning on the 7th row and continue until the 19th row
- continue increase 1 at each end for every 6th row until reaching the number of sts needed

I might be overthinking this, but please help if you can!