The thing is the first update will be de skeleton of the game, maps, systems and stuff. With two months only for all that i guess we will have a couple scenes and all that and then he will resume the monthly update. I think he didn't expect the game to be so popular since he decided to improve the bases, maps and stuff when he could simply have done copy and paste.
This dev for the moment has delivered in the amount of content he adds in his updates so even if this one is a bit short i will trust him and keep being his patreon.
A lot of people are asking about Sakura 2 and all that, that project is on hold until he finishes this one i guess Fate is not as popular as SAO and thats why he started a new project (I'm a Fate franchise addict with fate GO included so i'm sad about that too).