If they're heavy, don't water. If they're not wilting, you're good. If they've been over watered, they could use a bit of a dry back. You'll see when the first leaf at the bottom slightly wilts, then you can give them a little water. If you do have slimy roots or weird stuff happening, the dry/wet cycle in peat will give them the oxygen they need and fortify them.
Might I recommend some kind of wicking system. You can look up easy to make at home ones on YouTube, you can buy some of you have the funds. As long as you have good drainage in the soil (ie pumice,perlite) you'll never over or under water again. I had many issues with over watering and under watering due to my health and not being home. My friend convinced me to look into wicking pots and it's been a game changer. The plants are perfectly watered all the time. And I can have anyone come and easily fill the reservoir so they stay properly watered all the time. And it doesn't need pumps or water lines. Seems like a too good to be true cheat.