Trying to restart breast feeding after stopping

Has anyone successfully gotten their milk supply back after stopping breast feeding for a lengthy period of time? I stopped for two weeks after I was told I needed to be on a medication long term. Turns out I don’t need to be on it anymore. The first time I pumped I got 3 oz but have only been able to get maybe a half oz every time after that. It’s been about 4 days. Just wondering if anyone has done this and how long it took to get their supply back.