The 50-year-old was appointed in 2017 and, after a horrendous start under Andries Jonker, guided Die Wolfe up to 12th heading into the winter break.
Sunday sees them return with a tough trip to Borussia Dortmund, a side who they lost 3-0 to at home back in August.
Schmidt says he has been encouraged by his side’s progress during his tenure to date but insists he still sees plenty of room for improvement in 2018.
“We haven’t lost many games but we’ve not won enough either,” Schmidt said. “We know the very minimum is to double that tally and increasingly turn our performances into wins.
“We know we must improve on our precision, tempo and our ultimate conviction. We’ve worked on that and I firmly believe we can have a positive second half to the season.”