The Hammers boss is however pleased with the manner in which his side have trained.
The Hammers have found themselves starting their season earlier than everyone else once again this year because of their participation in the Europa League.
They take on NK Domzale in the third qualifying round of the Europa League in Slovenia on Thursday as they seek to make it into the group stages of the competition.
West Ham warmed up for that tie in fine fashion on Saturday with a comfortable 3-0 win over Karlsruher SC, with summer signings Sofiane Feghouli and Ashley Fletcher both on the score sheet.
And Bilic has admitted that their preparations could have been better but he is pleased with the way his side have trained.
“We are happy with our preparations,” he told whufc.com. “It’s not ideal but I’m really pleased with the way we’ve trained. If we continue to work hard like this, with dedication and humility, we can expect good things."
It now remains to be seen whether the early start has a negative effect on West Ham when the Premier League gets under way.
It certainly did not affect them last season as they started the season on fire with an impressive win over Arsenal.
They face a similarly tough start against Chelsea this time around and will be hoping they can start Bilic’s second season in charge in a similar manner to his first.