he invests 102 liquid Steem and receives 59 Steem, so he must wait at least 3 weeks to complete the initial liquidity, or he has to invest 61 Steem to continue with his farming plan.

That's actually a positive side to these practices! 👍

only one has been made effective.

Not any more. Sometimes it takes a little longer and if it doesn't work at all, the amount is returned.