Speaking as an ex-mentor for JFDI (Singapore's premier accelerator), for a solopreneur, I suggest you go down the **
productised service** route. You start off as either consultant (with potential to be acuhired) or distributor route. Then the customer base allows you to fund you living expenses whilst you build up a digital -product which has passive income properties (ie does't consume personal time and near-marginal delivery cost of zero). You have to put in some hard yakka to prevent the same idea being easily copied by a big player (it is easier for a firm to be irrational than a startup to be solvent). Then partner with trusted channels to enhance the value of what you offer ... remember that that idea is (relatively) worthless but the execution counts. As I tell, founders .... customers are interested in 1" **
holes** not how fancy your 1" drill is. The advantage of a solopreneur is that you can survive in niche areas .. .heck Joibs & Woziak started selling Apple I kits to electronic enthusists before the widely popular Apple ][ ... just keep in mind that biiopharm is heavily regulated so be careful of what you are offering.
If you want inspiration of how to build up a company, I've a list of inspirational books ... a starting point is
Shoe Dog of how Nike started. But another mantra I tell founders is "if you want to go fast, go alone ... if you want to go far, come along (with others)". Finding others that complement your skillset and sharing your why (vision) is probably the most difficult step in growing your business.