We are Pakistani citizens and have a family application for F4 visa. The case is with the US Embassy in Islamabad. My wife (the primary applicant, age 42) and one of my daughters (age 17) have been asked to fill in DS5535 (this was on July 20th 2023). Neither I nor my other daughter (age 18) were asked to fill them out. We filled the forms for the wife and the daughter and sent them out on July 21 2023. The passport status (via email) says "no status available" (since July 22 2023). The US Travel Docs website shows no delivery information. Any ideas on how long the wait can be, because I have job interviews lined up in Cambridge in October. When can we expect our visas to come through?