Your solicitor is correct.
You are looking for certain orders from the Court. The Court requires that both parties are satisfied with each others finances. If your husband wants to see your statements, he is entitled. Very often, an analysis of bank statements turns alleged spending completely on its head.
He may or may not want to see your statements but he is entitled. As are you to see his.
The fact that things are not amicable does not augur well.
Good advice to both of you : take a step back, be sensible and try and resolve your issues without rancour.
mf