My Baby - Teething Issue 1 Week Before 1 Year Old

I have been eyeing Little Jen's gums since the time I found the new molar tooth sprouting. It seems like his gums are swollen especially those near his 3 bottom incisors. Tried to offer him his Avent Stage 3 Teether but he only bit on the fish shaped teether for a while and then totally forgot about it.