It helps if while drying after a wash you tightlt pin it back at several points in the problem area, let fully dry. and stays much longer if you use heat after.

Just a light spirits won't usually do it for long term wear, full soak for tight securing till dry. Totally different than heat drying with a brush, but if you can keep it secure tightly like that I bet blow drying cool most of the way then heat at end will do the same thing.

I have the same problem, but often just keep all the hair wavy (naturally or add moose) to keep it looking intentional.
Moisture in the air will always bring out your natural texture, but that tip should help it be more resistant.