Hi deby,
As far as I know e-case is not very reliable it doesn't change at the same time the steps are taken by the VO, for example : my application is in process (the VO told me by mail) and the e-case shows received by VO, and this is since February , so my suggestion is don´t trust everything e-case tells you, just be informed by the timelines and if the time is exceeded send an inquiry directly.
Sorry I can´t help you with the timelines but I'm pre-june applicant but maybe someone else could.
P.D. I saw a user called hub2 ho is also from mexico and is in the same category as you and he is post-june applicant.
Hope this helps