Financial Documents

Hello! I was on a career break early this year until our I-130 gets approved. One month ago I got a job which pays around $70k. My most recent tax returns show an annual income of $57k, $90k and $90k.

1. Since I recently got my job, would it be better to upload proofs of assets such as checking, savings, retirement accounts to make my case stronger?

2. If yes, do I simply need to upload the most recent statements or a letter from the bank/financial institution confirming those balances?

3. Since I'm solely sponsoring through my current job, would it be ok to skip the asset section in I-864 form and just upload the statements.

Appreciate your thoughts on this. Thank you!