Lampard felt he had no choice but to change things following the gruelling away trip to Valencia in the Champions League.
"I think the team out there had enough quality to win this game". One player on their radar was Isaac Hayden, but they failed to procure his signature from Newcastle last summer.
"We arrived back late [from Valencia] and I had to think about how we think about it going forward".More news: Zorc sure Sancho won't push for the January exit of Dortmund
"Now we will see how much more he can give us".
"I still believe in the squad". That will be questions that will be asked. "I'm 33 now, I've had a decent career, I've played quite a few games but it still doesn't prepare you coming into this. Today was one of those days but I don't think it's a time for harsh reactions and judgements".
The Hammers may be hoping Lampard turns to Michy Batshuayi, as World Cup victor Olivier Giroud has struck six times in 12 Premier League appearances against them during his time in English football.
The victory sees West Ham steer four points clear of the relegation places and eases pressure off manager Manuel Pellegrini Chelsea travel to Everton in midweek while West Ham visit Wolves.More news: New Orleans Saints Survive Against the Atlanta Falcons
The festive period isn't kind to anyone in the Premier League, but it's significantly more hard for an inexperienced team with an inexperienced manager.
The Hammers are 17th in the table, three points above the drop.
Lampard explained: "It felt to me the way the game was that as West Ham defended deeper what we needed was some ability to try and get another person who can go by 1 v 1 and take people out of the game and create something because the game was becoming hard".More news: Ariana Grande spends the first thanksgiving in 18 years with both parents