My 1 year old not eating anything...still breastfeeding....tried everything...give suggestions how to wean off

You will have to slowly wean him off and not abruptly stop feeding him. Reduce the time of his feed first. Like if you are feeding him for 10 minutes then reduce this time to say 8 minutes, 5 minutes and do on. Then you can reduce the number of feedings. If he asks for feed initially do not altogether avoid it but give him for a lesser time. Eventually HD would wean off. You need to understand that your feed is more of an emotional bonding for him that he misses when he doesn't take feed...so it will take time for him to adapt to new thing.