Yes, it’s a lot of work, but one of the great things you have going for you is that you appear to do a good job of making a host observation with each parasite observation. Make sure to use the Associated Observation annotation to link these (an aside, I might have linked your insect to the wrong host plant, since you had multiple adjacent English Oak observations). If/when both observations are Research Grade and linked with an appropriate annotation, they will be picked up by the Global Biotic Interaction database (https://www.globalbioticinteractions.org/).
I read this post occasionally, and I always seem to find something new that helps me improve the utility of my observations: https://forum.inaturalist.org/t/add-interactions-to-species-pages/433/2