B-2 Visa

My son-in-law was interviewed at the US Consulate in Frankfurt in May 2023 for a marriage-based immigrant visa. They have requested his CV with traveling details for further processing. His case has been in Administrative processing for well over 90 days. I have two questions:

1. Is anything can be done to expedite the process?

2. He has traveled to the US on a B1/B2 visa four times prior to his interview from Germany. Is there any problem with him traveling to the USA to visit his wife while his case is in Administrative processing?

I have an approved I-140 (Approved in Feb 2022) which is already 6 months past the approval date & my priority date is August 2020. I am currently on H1B visa where I have already completed my 1st 3 years and currently am on the 1st 3 year extension.

My question is :

1.If for any odd reason I lose my job in the US, and I am not able to find another job within the 60 days grace period, what alternatives do I have within the US and find a job (H4 is not an option for me currently) ? Would joining a consultancy be a safe option to stop accruing unlawful presence OR compelling circumstance EAD ?

2. If I decide that going to India is a better option and want to come back after some time to the US, would I be subject to the H1B lottery at any point in future if my 6 years of H1B is exhausted ? What information or documents are needed to assist for returning back to the US ?

Currently, I am holding a STEM OPT from May 2022 until May 2024 (2 years).

My employer had applied for H1B this year and last year but had no luck.

Question and suggestion, please:

1) What are my legal options?

1.1 Apply for H1b next year in March and wait for the result, In case H1b is picked, how do I process it as my STEM opt expires in May 2024?

2) Enroll in university for the Master's degree?

2.1 I have a few classes remaining for my master's as I have finished my bachelor's degree in the USA and I take Day One CPT? Once a master's degree is complete, reapply for OPT and STEM OPT.

2.2 Should I continue to apply for H1B in the meantime?

3) If I apply for Master and Day One CPT, do I need to enroll for May–August 2024 (the summer class) or can I enroll for Fall 2024?

Note: STEM OPT Expires: May 15, 2024, or please suggest any other better option to stay in the USA.

Lastly, my passport expires in May 2024 as well. Is there any problem there?

- I'm thinking of starting the process for the renewal online. Should I do it now or wait for some time?