Re introducing breast

Hi all! So please no judgement here but I chose not to breast feed and have been formula feeding for now 3 months. I don’t know why but I suddenly feel the urge to want to breast feed (as well as formula ) . I think at the start I was so overwhelmed I didn’t want my baby to be fully reliant on me for milk as I wasn’t sure if I could fur-fill his need and needed support .. as I’d had an emergency c section do was bed bound for a week ..so chose formula as my ‘safe’ option as I knew I needed help in those first few weeks and wanted him to be able to take a bottle from loved ones .. as I needed to know he would be fed and happy if I couldn’t do it … Now we are in a routine I do really feel like I want to partially breast feed Has anyone done this ?? And if so Has anyone got any tips on how to stimulate milk supply again ( if even possible )