The Saints' mini-revival of four matches unbeaten was ended on the weekend as they lost 1-0 at Liverpool which saw them remain in the relegation zone.
"We're making strides forward, there's no doubt about that," Lallana told the Daily Echo.
"Christmas is going to be massive. We've got a huge game against Reading. It's important we pick up points at home, especially against the teams around us, and we're focusing on that now.
"We'll put this game to bed, and it's a huge game next weekend."