For context, I have no idea on how to take care of plants, but I’d like these three baby plants I bought to thrive.

I’d also love to snip them every now and then when I’m cooking, making a salad or a tea etc.

Right now each plant is quite young and in small plastic pots. The chocolate mint is already about 8-12 inches tall. The lemon balm and orange thyme are both less than 5 inches tall.

My questions where I’d love your advice are:

• How often should I water these plants?
• They’re all newly bought and in disposable plastic containers. When I repot them, will it be dangerous to mix their current soil and the generic store bought soil I’m planning to get?
• How fast do these plants grow? Should I be optimistic and already buy semi-large pots, even though they’re quite tiny right now?
• Any other general tips to care for these plants?

Appreciate your advice, whether it’s plant-specific or applies to all the three plants. Thanks in advance!