Help with baby cardigan

Hi

I have a pattern here that is a 7 row lace pattern and i am stuck on sleve section

shape sides by increasing 1st at each end of 5th and every following 4th row until u have 51st ( i started with 37 so i have 14 to make)

Ok my Q is when i make my first increase on the 5th row do i continue
to increase on the 5th row when i increase on the 4th.

Or does the pattern mean I increase one time on the 5th and going forward only on the 4th???

thank u for any help u give

Increase on row 5. Work 3 rows and increase on the 4th row. You’ll work 3 rows and increase on the 4th a total of 7 times. When you have the right stitch count you’ll know that it’s time to stop. HTH