The 22 goals they have scored in 20 league matches is the lowest in their history and with Daniel Sturridge, Divock Origi and Danny Ings all injured the Reds are operating with one fit striker in Christian Benteke.
Although the Belgium international scored goals in the two matches immediately after Christmas he drew a blank in Saturday's defeat at West Ham and has so far not convinced.
Klopp was hopeful Sturridge would be fit for this week's double-header against Stoke in the Capital One Cup and Exeter in the FA Cup after a month out with a hamstring injury, but the player has now suffered another minor setback in training and will not be ready.
"Daniel had some problems, not serious, but could not make a session and we had to wait a day," said Klopp, who has regularly referred to the last month as effectively pre-season for Sturridge.
"Because he didn't have one session with the team it was not the usual plan for this week.
"It is how a pre-season can be. Some little things happen and we have to handle this.
"It is not a row of sessions and we say 'Now we are here and go...'
"I will pick him when he is ready, I will not hold him back.
"What Daniel has to do at this moment is hard work to be prepared for the things we make in a football game. He had the last complete pre-season a long time ago.
"In pre-season we load our bodies with strength, energy, all we need for the games and then the problems start.
"It would be easy for me to say 'Come on, let's try, we have problems, we don't score enough goals, let's see what will happen' but we have to wait and be patient."
Source: PA