Ask HN: Sharing equity with cofounders while I fund it 100%

I have a startup, three years running now. We have started to generate some revenue to survive and bear the operational cost.

When the revenue wasn't here - I have invested in it 100% money. I have put in so far around half million USD.

It's about time I share some equity with my cofounders who are only contributing the human resource. One of them is technical and another looks after managerial aspects.

My technical cofounder works around 14 hours a day while the cofounder manager works office hours.

Please share you advice on how should I split and share the equity so that they feel valued and respected.