Yes at 4months ds started doing this too! I'm happy to say it's settled back down again at 5.5 months. I think it's growth spurt, developmental and they are aware of breasts as comfort now. Ds gets really excited when he sees my boobs these days lol.

Don't doubt yourself. Do you cosleep? I cant cope unless ds is in bed with me, because then at least it's a quick roll over feed and back to sleep.

this too shall pass!!!