Wondering when I should actually cast my

Short answer: the card says the timing isn't what's holding you — the self-scolding is.

I drew one card for this. Current guidance: Strength, reversed.

Tarot doesn't cast anything, and neither does a spell done because a date felt right — a card can't tell you a month is lucky. What Strength reversed points at in a question like this is impatience turned inward: you want to do it *first* and do it *right*, and the harshness you're using on yourself about not having started yet is the thing actually in the way. The card isn't saying "wait for a better date," it's saying the readiness you're looking for outside the deck is patience, not permission.

So, read it as a conditional rather than a forecast:

• If when you picture the first attempt you mostly feel pressure to prove something — to yourself, to someone else — then Strength reversed says that impulse is the block, and the attempt will read as "did it work?" instead of "what happened?"
• If you can name the actual situation in one plain sentence, with whose life is involved, then the card leans the other way: patience there is real patience, and nothing in it needs a ceremony to start.

One thing worth checking before any spell, cards or not: whether the thing you're aiming at is another person's choice, feelings, or health. On this question the deck says nothing useful about that, and that line isn't a timing question at all — it's a line worth settling yourself first.

Your step, inside 48 hours: ask one person who has actually done this what they had ready *before* their first working — materials, timing, permission, preparation — and write down their answer verbatim. What comes back is information this card can't give you. Then compare it to what you have.

Want this single card drawn as a picture, or the reading kept in your journal?