I find one of the hardest things to not do with pumpkin growing is not doing too much. Too much fertilizer and water can be just about as bad as not enough. If you make a plan before the season begins I find it helps keep those "urges" in check and it helps make sure you don't accidentally miss something.
For example, I put together this fertilizer program before the season started:
Will I follow that plan exactly? No. I watch the plants and see what they are telling me and make adjustments, but for the most part I'll following what I outlined. There are specific things given to the plant at specific times for a specific purpose. Every plant during vining needs nitrogen. So unless I see bloated, overly dark or over sized leaves, I will follow what is outlined in my fertilizer program.
Soon I'll start giving the plants spoon feeding amounts of fertilizer every day. I know some excellent growers who do that from the very start. I lean a little more towards letting the plant get what they need from the soil they were just planted in initially. I figure there should be plenty of nutrients available that first week. The 2nd week after planting I'll start adding a little light fertilizer occasionally aand then in the 3rd week I'll start putting the hammer down.