Brazilian wax

So I’m new to waxing. I’ve only had it done twice the past 2 months. I get a Brazilian wax and my underarms waxed. Anyway for some reason my hair is growing back in patches instead of all at once So I’ve never gotten a completely smooth result. It’s been 4 weeks since my last wax and most of my hair has come back but I have bald spots. I’m just ready for all my hair to grow at the same time so I’ll be completely smooth. Has anybody else experienced this and what can I do to fix it?