Anyone else running a profitable side project but treating the business side like a TODO comment you never get back to

Making decent money off a side project now and I just realized my entire financial setup is stripe payouts going into my personal checking account and a google sheet I update when I remember to, no business account no invoicing nothing.

I know I need to get this together especially before tax season but every time I sit down to figure it out I end up just working on the product instead because thats the fun part. Are you guys actually organized with this stuff or is everyone just winging it like me?