Decreasing stitches keeping lattice pattern

I am trying to decrease a stitch at each end of alternate rows whilst keeping in lattice pattern but if keeps going wrong can anyone help

I think the answer comes in how you are starting the row immediately following the decrease row. For example, say your dec row normally ends in k3. Starting the next row has you p2 and then start the repeat pattern. If instead you p1 and start the repeat, you’d stay in pattern. It might help if you chart out that section to get a better idea of what’s happening. Also, while I couldn’t find anything specific to lattice stitch, thus is a pretty good video where she talks about her thought process for shaping on any patterns:

Hope this helps.

Will have a go at doing a chart but my 6 rows vary in the lattice pattern so it is going to be a challenge.