Wanderers have now won just three of their last 15 games and were booed off at half-time and full-time.
Solbakken said: "It is the same story as against Peterborough (a 3-0 home defeat on Boxing Day).
"We started okay but after Ipswich scored it looked like an uphill battle.
"For me when you are under an amount of pressure like you are now then it is about having to win the battle with yourself.
"I think that you have to go out and make sure that you do what you think is right.
"I think at the moment I think we look a little bit scared.
"That must not be the case. We must show everyone that we have the character and at the moment the two worst performances of the season have been the two last ones. It can't get any worse.
"We may have to make changes and if that is something we have to do then we have to do it. It is about getting the right mix and that mix hasn't been right lately."