Baby bottles

Codie
Help mummas I found out my 18month old has tongue tie 
I'm have 3 months befor getting in to see the doctor about it I have always wondered y he wasn't drinking his bottles well and now I know he is on closer to nauter bottles and he can't really drink from them can any one tell me what bottles would help I have looked at the mam but can't seem to find them anywhere in town were I live :)