How long to keep a sticker chart while potty training?

If you used a sticker chart or some sort of reward system, how long did you use it for? My daughter is 2.5 and we’ve been potty training for 10 days now. She’s doing a fantastic job (first 4-5 days were difficult and she was terrified of it), but now she loves it. She’s filled up her sticker chart and we’ve started over. My question is- how long did you keep your chart or reward system? I don’t want her to need it when she’s like 5, but I don’t want to take it away too early. She hasn’t mastered bowel movements on the training toilet yet so I know we aren’t taking it away now, but I’d love some insight from others who have been through this! Thanks :-)