Easy enough to note on scratch paper, if nothing else.
Dec (first one is on K side), P, K, P, K, P, K
Dec (7th row is P), K, P, K, P, K, P
Repeat those two lines for total of 6 paired decs. Cross off each row when done. Just make sure when you're doing the P (WS) decs they're the same kind of dec to match what you're doing on the RS.