Thank u so muchHello,
Seems Acknowledgment of Receipt (AoR) is taking 50-60 days at this point (here is the May spreadsheet for reference https://docs.google.com/spreadsheets/d/1UVvKb4Sem00uOCyB2kTeM2_AofgT_8b4uTJyBh9pXdg/edit#gid=270862106)
You may want to connect with other May applicants and/or add you father's information to that sheet there is a thread specifically for May applications (https://www.canadavisa.com/canada-immigration-discussion-board/threads/may-2018-citizenship-applicants.557978/page-23)
Cheers,