Accidental American here and didn't realise I was supposed to be filing taxes. Born, lived and worked in the UK my entire life, got my first US passport this year and went into a blind panic when I realised I'm supposed to file taxes and provide transcripts for the I-864 Affidavit of Support, as me, my husband (UK citizen) and 3yr old daughter are planning to move to the US. We have submitted I-130 forms. My father has agreed to be a joint sponsor (earns well over the amounts required for household size).
My question is, has anyone done the streamline procedure themselves without the help of an expat tax company or software? I want to get myself compliant ASAP and cannot afford to pay upwards of £700 to get it done by someone else. If anyone has done this, any pointers/tips/advice would be helpful please!