Nursing strike

Hey mamas!

I left my 11 week old with grandma while I spent some one on one time with my 3 year old. In that time he got one bottle. This was Tuesday (July 12) and ever since then he has been on a nursing strike 😔. Has this happened to anyone? How long did it last and what helped get them back on the boob? I am so stressed out especially since he has a dairy intolerance and where I live there is a shortage of that formula and I can’t find it anywhere. Please help