Bitcoin node on off

I am interested in running a bitcoin node, specifically, start9, with the embassy OS, raspberry Pi style.

Questions

1. How much bandwidth does a full node take daily/monthly. 1000GB /month available before throttling.

2. Can the node be turned off for 2 months, ex. November and April. Then run continuously for the remaining months.

3. I'm not planning on connecting a wallet, yet. Currently use ledger and blue. Really looking to learn about sovereign computing and supporting the bitcoin network. Any tips, advice or resources are appreciated.

TIA.