I always think it's interesting when people ask this question. Can I ask you a few questions?
- What was your bankroll at the start of your down swing?
- What games are you playing? MTT's, STT's, Cash, Zoom?
- How many buy-ins are you down?
Often low stakes players are not properly bankrolled even at the micro stakes, so just a couple of losing sessions can put a big hole in your bank roll.
Understand that down swings are part of the game. Even when you're a winning player and even when you're playing well.
Give this article a read. Personally, I think Little is more on the conservative side than is necessary, but the theory is sound -
https://pokercoaching.com/poker-strategy/the-bankroll-bible/