Solo401k when maxed out on w2 401k

Retirement Accounts and Strategies
1

Hi!

I have a day job w2. Also have a side gig as a smllc. I max out my day job 401k and a Roth IRA every year.

Can I also do a solo401k and contribute only the business contribution of my smllc draw into the solo401k? The 20-25% of my draw without doing any “employee” contribution into the solo401k ( since I maxed out the employee side on the day job w2 401k )?

Thanks