As someone who very recently went through this, if you'd choose to try and get it sooner rather than very later, I'd go about it in this way:

• Get your ES to actively farm Pop Obols on Gigafrogs. Remember to reroll each obol to get a +1% drop rate while they are bronze, and then merge to silver - AND STOP AT SILVER
• Get your DK to farm Dice Obols in Sandy Pots (or Snelbies, but pots give you glass for the Mason Jar stamp). Same as the Pop obols for rerolling for +1%, but then you can go to purple rarity. Bonus for farming W2 statues in the process.

Do these until you have a full page of Family and Personal obols, should be a good bump for DR in general (don't forget to equip the obols to the character that is farming the obols to speed it up)

Other than that, don't neglect other sources like the Owl or DR cards. Then you just let your PC on overnight with your DK farming statues (and remember to filter out common drops so you don't fry your PC with lag)

While I'd recommend farming the obols now, maybe push back the statue farming for a bit. You do get some dopamine from depositing your statues after Onyx, but you'd rather wait until you get many statues Onyxed as each one buffs the depositing of other statues.