B-1 Visa

I am currently on a B2 status and waiting for PERM approval. I have extended my B2 once, and I still think I would need another six months until my perm and I140 get approved. I need your suggestion in making a decision:

Should I move to day 1 CPT OR extend my B2 for another six months?

Which one will be the best option so I don’t get any RFEs from USCIS in the future?

I have another question: My parents and brother have their B2 visa interview scheduled for May 31st. If they ask my parents about me, is it a good idea to mention my situation in the interview?

I'm on F-1 OPT with a STEM MS Degree. If I put a startup, I will be performing my roles directly related to the degree.

1) To establish employer-employee relations would having a board of directors be sufficient during STEM OPT?

2) If I apply for EB2-NIW and get I-140 approval then can I immediately shift to other non-tech roles within my startup (CTO -> CEO) Or do I have to wait for 6 months before doing that, all the while when I-485 is pending?

3) If I shift immediately and use I-485 EAD instead of F-1 EAD, then can that lead to I-485 being rejected?

Should I wait at least 6 months before using I-485 EAD? Also, if the startup fails, does that discontinue my I-485 process having approved I-140?

Many have asked this question before, but since rules and situations are always different, so here I go - I'm on H1B with an approved I-140.

A layoff recently impacted me - my last day on payroll is 10th Feb 2024. I will also receive a severance (lumpsum) within 75 days of Feb 10th. My questions are -

1) Given the market, it may take more than April 10th to finalize an offer and start the H1B transfer. What are the options ( if any ) to extend my stay beyond April 10th?

2) Many suggest applying for B1/B2 (I'm single, have no spouse to move to H4, etc), but I also hear if it's rejected then the time of my stay after April 10th will be an illegal presence, is that true?

3) Say I receive the severance lump sum on March 15th -- are the days from Feb 10th until March 15th counted on company payroll?