Hey Neha,
Start with the micro-zone rule so you never empty a whole area at once. Pick one surface that fits on a bath towel, lay the towel down as your boundary, and set a 12 minute timer. Use Two-Bag, One-Box: trash, donate, and relocate. Every item gets only those choices or goes back where it lives and no new piles. End every session by taking out the trash and putting the donate bag by the door so you get a visible win.
Order that works in a small place is paths and surfaces first, storage last. Do entry floor, couch, and bed so you can move and sleep, then kitchen counters and sink, then bathroom counter, then one drawer or shelf per day. For clothes, pull only one drawer or 10 hangers at a time and use a maybe quarantine bin dated for 30 days. When the timer ends, do a five item finish where you put away five stragglers so you do not leave a mess. Repeat daily or every other day and you will see progress without the overwhelm.