R.K.
I used to be a hand model and always had weak nails and never used false nails. So here's a few things I learned:
Always wear rubber gloves while cleaning.
Don't use your nails as tools, use a butter knife to scrape off stuck on food, ect
Use lots of hand lotion and creams.
Twice a week put vaseline on hands and nails, get under nails put on cotton gloves and go to sleep (works great on feet too)
Only use nail polish remover once a week--and only non-acetone remover
Do a manicure weekly, I have always done my own nails and cuticles. If polish chips 'patch' the chip and top with clear.
Look into a nail strengthener called "Nail Magic" Sally's Beauty Supply carries it and I found it on on Walgreens.com but the shipping doubled the price.
Good luck I hope this helps.