How do I tell my client his cousin is killing the business?

I’ve been pulling my hair out recently because one of my clients decided to bring family members into his business to help run things. And honestly, it’s his company, so he can do what he wants. The issue is that their involvement is starting to spill over into my work and the results I’m responsible for, and I don’t want it to look like the SEO services we’re providing are the problem when he reviews the monthly reports.

The most recent example is his younger cousin, who says he’s a “big tech guy.” He watched a few marketing videos, including one about a Shopify store, even though this is a landscaping company, and suddenly decided the website needed a full redesign. Before bringing it up with me, he started deleting and moving things around on the site. Luckily, I caught it early and was able to restore a backup, but this isn’t the first time something like this has happened.

Another time, he decided to “limit test” the Google Business Profile, which was ranking number one at the time and generating around 50 calls per month. He started changing the address without realizing that Google may require verification when you edit key business information. That ended up triggering a reverification issue that cost us more days of no leads.

I’m in a tough spot because I understand this is family, and I get that he’s trying to help them get involved. But at the same time, he’s paying me to do a job that I can’t properly do if people are making random changes without telling me. Right now, SEO makes up about 70% of his lead flow, with the other 30% coming from referrals. If the website gets damaged, the Google Business Profile gets suspended, or major changes are made without a strategy, there’s a real chance we lose the progress we’ve worked hard to build.

How can I bring this up to him in a professional way without sounding like I’m attacking his family?