Tooth Care for Baby

Hello mga Momsh! Help pleeeeease. My baby is turning 10 months old. He started to have teeth nung 8 months siya. Pahirapan siya i finger brush or kahit cloth. Ayaw niya i open yun mouth niya. Kaya minsan pag tulog dun ko dinadahan dahan punasan yun teeth niya kaso hindi everyday kasi di laging successful. Minsan nagigising siya. Huhuhu. Pleeeease mga momsh help. How do you get your babies feel comfy with finger brush or whatever na panlinis ng teeth ? Thank you!