Is it a eight-character idiom to fish for three days and dry the net for two days?

be

title

Fishing for three days and drying the net for two days-working intermittently; Lack of perseverance; play with

Pronunciation s ā n ti ā n d m y ú, Li m ā ng ti ā n sh á i w m ng m ng.

Interpretative metaphor has no perseverance in study and work, and it is often interrupted and cannot be adhered to for a long time.

source

Exercise every day instead of fishing for three days and drying the net for two days.

Synonym: one violence and ten cold.

The antonym is perseverance.