Hi. I have chosen a lovely pattern, ‘Laresca’ by Corrina Ferguson. The suggested yarn is Rowan Panama which is discontinued. That tension is 24 sts x 30 rounds = 4" with size 4mm needles.
I looked on a yarn substitute site and have chosen DMC Natura Linen instead which has a tension of 22 sts x 28 rows to 4" on a size 3.5mm needle.
Help! What do I do now? Thank you so much for any guidance from my knitting sisters in heart!