(this post is a feed post from my comments on reddit)
r/startups
ask them what they believe is reasonable commitment and what they expect as compensation. ask them how they feel partnering will match with their aspirations. – you’ll likely get a feel for how serious they are from their responses.
don’t do anything related to pay or equity until you see proof of their commitment – make sure the reward is proportional to their contribution. with equity, 1 year cliff 4 year vesting is typical.
in your specific case, seems like your friend isn’t particularly committed, either they dont know how they should be involved, they under estimated your expectations and the level of commitment needed, or they aren’t particularly serious.
ultimately, if they haven’t contributed, then you should cut your losses and move faster.