Sporting Bengal United ended a seven-game losing run in the Essex Senior League on Saturday.
Having endured a miserable March and lost their first two fixtures in April, they welcomed White Ensign to Mile End Stadium.
And Noah Adejokun gave them a 19th-minute lead, which Andre Embalo doubled just before the hour mark.
The visitors hit back on 68 minutes, but Bengal held on for three points to keep their hopes of avoiding relegation alive, just.
They trail Athletic Newham by three points with only two games remaining and head to Hackney Wick on Friday (7.45pm), before hosting Woodford Town on the last day of the season.
Neighbours Soul Tower Hamlets, meanwhile, suffered a rare defeat as they travelled to leaders Little Oakley.
Miles Mitchell-Nelson gave Hamlets the lead on 15 minutes, but Sherman Artmeladze was sent off just past the hour mark.
And the home side drew level on 71 minutes, then scored twice more in the last three minutes to seal a 3-1 victory which sent Hamlets home to east London empty-handed.
Third-placed Hamlets were due to host fellow promotion hopefuls Barking last night (Wednesday).
And they welcome White Ensign back to Mile End on Saturday before ending their campaign at Halstead Town on April 25.
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