It definitely shouldn't take 3 months, I'm a monotributista and it took 3 days to become one, you can even do it yourself online.
Again, not an accountant, no lawyer, but as it's your savings you legally earned/borrowed/etc while abroad while not tax residents of Argentina, this shouldn't be an issue. That being said, if you're going to be sending hundreds of thousands of pesos per months while not reporting any income generated here it could be an issue as this is a common practice of people who do commit tax evasion (i.e. work remotely and pay no taxes, or participate in smuggling, etc.) While rare, if you bank asks, you can simply provide them a bank statement from your US account, or better yet, that coupled with a DDJJ from your accountant here. If this becomes an issue I highly recommend obtaining an accountant who will know which forms or documents you need to provide, but while abroad I sent my husband over a million pesos over the span of a year and his bank didn't ask anything. (This was of course after he completed the form the WU makes recipients complete, as I assume you already have done)
Something you could do is as follows, whether it's kosher or not, again, I'm not a lawyer:
- Have your husband open a caja de ahorros bank account with his DNI here (he already has has while you wait for yours)
- Have him open a Naranja X reloadable visa account here
- You send the money to him from your account in the US to his account here via WU as familiar support
- He transfers the money you need to buy groceries, things for the apt, whatever to the Naranja X (the card is purple and doesn't put the holders name on it)
- You could then use the Naranja X card it to shop when you guys aren't together
If you guys are always together anyways while shopping, you should just use his debit card and skip the Naranja X steps. As well, don't open a free universal account, it's limited to people whose transactions don't exceed up to 3x the salario minimo movil y vital (~99K ARS or $495 USD/month) and I'm sure you guys will likely exceed this anyways.
Good luck!