As the pilot in command 15 secs away from becoming IMC you chose the wrong moment to become distracted by something that didnt need urgent attention. The first action on becoming IMC is to determine the minimum safe altude to descend to or climb above, not to just descend.
How can you be surpised at the actions of someone who has just started IFR training, There are many very experienced IFR pilots who have ended up being ex pilots due to taking the wrong action while IMC!