You obtained an excellent answer from attorney Behar. Carefully review it.

Regarding conversion from b1 to j1 visa

The Form is I-539. Do not attempt to undertake this on your own.

Wait for the actual paperwork to arrive from USCIS then show same to competent and experienced lawyer.

Better work out your differences and reconcile or else be ready to either withdraw your N-400 and file a brand new I-751.

You are not eligible to apply for any "H" category visa/status until you actually get a waiver of the INA 212(e) approved.

Question about My tax and immigration

Important to have an attorney review that tax return for I-140 purposes before you submit it alongside the I-140.

I m a visitor here I know that How open the LLC here for new business?

Yes, as a visitor in the US you are entitled to set up an LLC. Make sure not to work on it though, and instead hire others to do that in your place.

Immigration - naturalization eligibility?

You don't need to notify USCIS of your divorce. You become eligible to apply for naturalization under the 5 years rule 3 months prior.

I am a pending asylum applicant whose EAD expires soon. What should I show my employer for 180 day extension on my pending EAD?

Simply show that EAD extension notice application receipt to your employer.

Waiting on I-601 Waiver processing. Post-embassy interview evidence 1-year expiration soon approaching.

I don't think the US consulate will agree (or even be able to) "extend" the K-1 visa under the circumstances you cited.