A solid business plan is a bad business plan. You will find snags. You will find a need to pivot. The market will speak and you will be forced to listen and adjust.
Ask yourself this first; Have I sold anything yet? If the answer is no, forget the business plan. The number one mistake I see in all my mentees is this need to have this “stuff.” Whether it’s a business plan or a formation and bank account. All the fixings but no product. No idea if anyone wants the product. Not just wants it but is willing to pay for it. Find this out first. I mean put real money in your pocket by test running. Or lose money. Failure is a better teacher than success. Get on social. Get on Craigslist. Get on the street. Covid be damned. Then go to some site where you get a template and bang out a business plan. Then you revisit it when things don’t go as planned and you adjust.