How do I fix the problem of 3 plants ahead of the ...

Too early to judge, it will be decent plants, so smell would be huge issue, i would ripe one type and harvest early other one, but both at same time. One week is not big gap , there wont be issues. Check trichomes at right spots of buds to see maturity and you will know. Never check any leaf. Some strains bulk up faster, you still have like 3-4 weeks at least ... Maybe smallish tent with 4 inch max carbon filter setup would be smart buy to avoid such mess in future, earlier you buy,, less you will regret that you didn't do ir eatlier ... ;)))) Quality of cardboard drying setup or drying above lights in grow area will be way worse than in right conditions.