My1 year baby, i tried to omit the bottle of milk he drink while he s sleeping during night but he suck his thumb i give him water but no benefit?

Thumb-sucking is : natural till 4 yrs & does not harm or decay teeth. See http://www.ncbi.nlm.nih.gov/m/pubmed/2676311/. AAP recommends at 1 year: 1st dental visit. Wean from bottle to open-mouth, double-handled cup given only with sit-down meals & snacks. Limit milk & milk products to 16-21 oz./day; limit juice to 0-4 oz./ day. Brush teeth with rice-grain smear of fluoride toothpaste after meals & before sleep.