You need to understand that there are few things here for splotchy leaves.
FMV virus tree
and
FMV fig bud mites bite trees.
and
micro- nutrition deficient due to lower temperature at early spring time or off PH level
All of them can results of splotchy leaves.
Those FMV fig mites can spread to all fig trees, at least it happen to me, It jumped from trees near 100FT away, Please get a 60X+ microscope, they are very small and look the same as fig hairs.
Peak season for fig bud mites are June, July, and Aug, If you have those splotchy leaves at that time, make sure check with microscope, highly likely that fig bud mites are there.
Those mites will quickly reduce or disappear at end of August with to cooler weather, it seems that they do not like slightly colder weather.
Due to lots of bees and lady bugs in my garden, I am in Canada, where very hard to buy insecticidal products, I can not even buy Neem oil.
I had tried insecticidal soap, 2% Pure green oil ($C 22/ L), 2% Canola oil ( $C3 /litre), all waste your time and more damages on leaves than mites. ( confirmed with microscope).
One product work for me, it is called " Bug B Gon", it is 500ml of Canola oil with 1 dry daisy flower ( pyrethrum) inside, it does need few application to clear mites.