Yes. The extraction can be done. but it is advisable to take out one tooth at a time if the teeth are strong , stable teeth. however if they are showing movement, you can get them removed together.
It is also best to take it slow in case this is his first dental treatment and better to schedule appointments in the morning.
Next Steps
Visit your dentist for the best treatment plan and order.
Health Tips
it is best for him to first get used to the dental setup and then go for the procedure.