If you had some eggs, you could give them some cooked egg yolk. Also, if they are 4 weeks, you could let them roam a little with supervision. maybe you have a way to make a fenced area enough for them to roam a little. At 4 weeks, they ought to be able to forage some. They would if they were with a mom out free ranging. I can't say it would be best for them, but it might work in a pinch. I know how it is to run low before payday. I get paid once per month. The last week is belt tightening week.
