I'm a complete beginner cycling and I've recently started 3 times a week commuting on a hybrid 8 miles to work and 8 miles back. On the way there is a 5% gradient hill about half a mile long which is great fun to whizz down at 30mph on the way to work. It really puts a smile on my face!
It's not so fun on the way back though! Every day I end up having to get off the bike and walk up the steepest part of the hill as I find my legs just give up the ghost - despite my bike having 27 gears, and I've used them all.
What can I do to train to get up the hill? Is it just a matter of keep on trying or is there something specific I can do to help me conquer this hill? I'm assuming it's just my poor level of fitness that means I can't keep it up. It doesn't help that I'm 220lbs - which is why I have started cycling to get that number down as much as possible. Any tips greatly appreciated
For reference the bike is a Giant Escape 1 (2016)
Chain ring: 26/36/48 and cassette 9/11-34 Gear Calc here