Need so advice

shaily • FTM to a baby boy💙 Feb 2018

My little man is over a week old and at the hospital after he was born he latched very well for the two days but the second day my coliseum wasn’t coming in so I had to supplement and ever since then he won’t latch at all and I’m trying not to get frustrated but now I’m pumping and putting it in a bottle before I give it to him I try to get him to latch and no luck. Any tips on getting him to latch.