You're making big leaps but your progress will slow down after you've been lifting a while. It's not linear like some would have you believe. If that was the case we'd all be WR holders who have been lifting for years.
Keep up the good work and keep lifting heavy and hard. There's no need to change anything right now. Once you've stalled for sometime than it would be time to reassess what you're doing and what can be changed to start making new gains/progress but for now obviously your program is working well for you.