I did my research before using them, I used them in a diffuser then when my son was a little older I used a roll on (in double the dilution than normal for an adult)

I will be very careful with those. Maybe ask a specialist for an opinion.

I personally wouldn’t. I would look at perhaps a soothing baby lotion

I think you need to ask a gp certain things can be toxic at much lower levels for babies and I wouldn’t risk it personally.

Because babies have more sensitive skin than adults, the American Association of Naturopathic Physicians notes that essential oils should not be used at all on infants under 3 months old. Even when diluted, essential oils can cause skin irritation and sun sensitivity.

I would avoid putting any essential oils on or near your baby. There’s not evidence that they’re safe

I have no expert knowledge, but would suggest you talk to someone who does – essential oils can be very dangerous if you get it wrong.

Some Essential oils are not recommended for young babies. So just beware of using these when they are so young.

Beware of essential oils, some are not suitable for skin application in adults, let alone tiny babys

I have tiny tonics essential oils that I use on my son (they are roll ons)
Otherwise I would only be using them in a diffuser if it’s in the bottle.