bog down

phr.v. to become so involved in small details or problems that you cannot move forward with a task.

phr.v. to become impeded or stuck, preventing further progress; most commonly used metaphorically regarding tasks, discussions, or processes.

“We shouldn't get bogged down in the small details before we agree on the main plan.”

“The negotiations bogged down in a series of minor disputes over phrasing, preventing the parties from reaching a final agreement by the deadline.”

phr.v. to get stuck in soft, wet ground like mud.

phr.v. to become physically stuck in a bog or similar soft, wet terrain. The literal origin of the metaphorical senses.

“The heavy truck bogged down in the muddy field after the storm.”

“The armored vehicles bogged down in the marshy terrain, leaving the infantry without the mobile support they had anticipated.”