We got some swaddles off Amazon a pack of three was quite cheap. Our LO likes being wrapped up tight. We got some love to dream and tommee tippee swaddles from Vinted but they were too loose for him Comfy Cubs Easy Swaddle Blanket, 3 Pack - 100% Cotton Swaddle Set, Small for 3-6 Months Infants, with Adjustable Velcro, Breathable and Durable Sleep Sack, Newborn Baby Gifts - Grey https://www.amazon.co.uk/dp/B07Z8J49FH?psc=1&ref_=cm_sw_r_apin_ct_4SSKDD8CKBEWXPVMDGX0&language=en_US
We're using an ergobaby sleepbag/swaddle and she loves it! Got a couple off Vinted