I can't sleep til I get this done

Hi,
I am a new knitter but I think I am doing pretty good so far. Stuff comes out looking right. I am doing my first seed stitch pattern. I have just done 7 rows of seed stitch and the next step is to dec first stitch each side working dec sts into seed stitch every 4th row. Here’s the problem, Do I start to decrease immediately, or after I complete 3 more rows, and HOW exactly do I work a decrease into a seed stitch??
Thanks!

It depends on how it’s written - if it says 'dec on next row and every 4th row; then you dec on the next row. If it just says dec every 4th row, then work 3 rows and dec on the 4th. Work the st however the row starts; if it would normally be kpk then p2tog, but if it would be pkp then k2tog. That way you have a p then a k, or knit then a purl.

It seems like if it says the next thing to do is to decrease you would do it on the next row and then after that work 3 rows and do it on the next row again, which would be the 4th row.

It is easy to decrease in seed stitch if you do it right at the beginning and end of the row. Since you always knit a purl and purl a knit look at the third stitch from the beginning of your row. What will that stitch need to be as you work in your seed stitch pattern? If it is going to be a purl, knit the first 2 tog. If that 3rd stitch will need to be a knit, purl the first 2 tog. That keeps everything in pattern. Work on across the row and when you get to the last 2 work them together as whatever the next stitch needs to be, knit or purl. So if the 3rd stitch from the end was knit the last 2 would be purled tog. If the 3rd stitch from the end was purled then knit the last 2 tog.

Then work 3 rows and on the next row do the decreases the same way, but looking at what you need to do to stay in pattern.

Thank you both so much. I figured it meant do seed stitch for 3 more rows and then decrease in the 4th row so that is what I did, or I feel you are right, it would have said, decrease next row and every fourth thereafter. Decreasing in the seed stitch was extremely easy. Thanks again!!!