BB & RR

Wait until you get into the US. Extra caution my friend, extra caution.

Happy to hear your visa got issued. I presume this is the DV2? Note that it may have the annotation “subject to PP xxx..” (whatever the presidential proclamation number is that prevents entry during the ban, currently in place until the end of the year). There is no benefit to withdrawing the i130. So if I were you, I would be extra cautious and wait till you have entered the US. Just in case the president is re-elected and extends the DV ban and you are unable to enter before the DV visa expiry, you will still have a backup option in place. It is possible that Nepal embassy decided this visa counts as approved before the ban took effect (because it is derivative) and it is not subject to the PP, then you can enter anytime - you will only know that for sure which is the case when you get the passport and visa back. I would still wait until you have actually entered on the immigrant visa before withdrawing the i130. 

Thank you SusieQQQ,
You've been to helpful to many people.  Luckily my medical was clear this time and everything went well, i just got visa issued today, hopefully receive passport in 4/5 days.  Happy!!!
Now do you think i immediately withdraw I-130 application which was filed on July 2020 or wait until i enter into the USA?

Thank you SusieQQQ,
You've been to helpful to many people.  Luckily my medical was clear this time and everything went well, i just got visa issued today, hopefully receive passport in 4/5 days.  Happy!!!
Now do you think i immediately withdraw I-130 application which was filed on July 2020 or wait until i enter into the USA?

No. Your DV case did not need an i824 as you were listed as a derivative immigrating with her and there is no other petition it can apply to.

So there seems to be some different interpretation between embassies about reissue of visas that have expired. Some are not reissuing those under the ban. Others - including Nepal - are if the original was dated before the ban. This is not a reissue but it is a derivative of a visa issued before the ban so - again, I would contact the embassy because there is a long shot they may issue DV2 despite the ban. That may need to wait for routine appointments to start up again though.

your inability to join your family is not a criteria for expedite request. You can try. Nothing wrong to apply and see what they say. if you get it, you get it and if not you have wait more. 

OP already said his wife is in the US and she is in the process of filing i130 online.

I would still contact embassy in your case just to see if they are prepared to issue you a DV2, but F2A is a good backup. To answer your other question, no you don’t need a lawyer unless there is some complication like a criminal record. If you look at the top of the page here under the “guides” you will also find helpful info. Good luck!

No real way now - unless the AILA class action suit gets an injunction on the proclamation- to keep the family together and move... with one maybe long shot option. Option one, stay in Nepal. Option 2, those with visas move, and wife sponsors husband under F2A, spouse of green card holder, after she moved. Option 3 long shot: some embassies appear to be issuing derivative visas for cases where principal approval happened before the proclamation. You can ask your embassy if your husband can still be eligible as principal visa has been issued. 

And that is what I responded to above with 3 possible options.
 
by the way it’s unusual to get a second appointment in a case like this, where there has already been an interview, the visa is usually just issued when the clear medical report is received.  Are you sure  there are no other issues flagged?

My understanding is your wife and child got DV visas, you were scheduled at a delayed interview date which got cancelled due to the pandemic and is now on hold for the rest of the year by the EO.
 
If your wife has already immigrated to the US, she can start the i130 petition for you. Yes it can be done while you are waiting for DV interview. By the time it gets approved and processed thru NVC, the current hold on F2A visas will be lifted as it may take up to two years.
 
If the EO is lifted after December, you may contact the embassy to see if they will schedule the DV interview for you. If they do, you will be in the US faster that the i130 process.