Since I grow so many tropical plants, over 600 and counting, I tend to fertilize everything in segments of where they are. I want to fertilize weakly, weekly. One week I will fertilize my "baby" and "teenager" orchids, which are in my "Orchid" greenhouse and the next week I will fertilize all my plants that are outside. Basically I am fertilizing something every week. There is no way I can keep up with different fertilizers for all my species and varieties, so I fertilize them all with the same formulae of fertilizer. That may vary depending on the season, but they all get the same. I am a hobbyist, not a commercial grower, and I am a "one-man-operation". I may be doing everything wrong, but my plants seem to accept my methodology.
Jonna, if you begin to alternate fertilizing with watering, you will finally get to the point that you do it by habit - one week fertilizer, the next week water. Once you establish this regimen as a habit, you won't even have to think about it. It is like flossing your teeth. Once the habit is established, it will be with you forever.
P.S. Do you think I was once a dentist?